View source for Engineering:List of gauge conversions

{{Short description|none}}
This is a list of notable railway [[Engineering:Track gauge conversion|track gauge conversion]]s, railway lines where the distance between the rails is broadened or narrowed. Conversions to broader gauge are generally to accommodate heavier loads or for wider cars, while conversions to narrower gauge tend to be for compatibility with other lines on a rail network. This list also contains instances of lines already prepared for conversion and those which are planned to be converted.

{| class="wikitable sortable"
! New gauge<br />(mm)
! Original<br />(mm)
! Date
! Location
!class="unsortable"| Description
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 
| {{flag|Angola}}
| Luanda Railway
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1950s
| {{flagu|Angola}}
| Moçâmedes Railway<ref>Durrant, A.E., A.A. Jorgensen, C.P. Lewis. Steam in Africa, London, 1981, Hamlyn.</ref><ref>{{cite web|url=http://sinfin.net/railways/world/angola.html|access-date=2010-11-27|title=Railways in Angola|date=2010-11-11}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1970
| {{flag|Australia}} 
| Transcontinental line: Broken Hill to Port Augusta and Kalgoorlie to Perth as part of the Sydney–Perth rail corridor.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1980
| {{flagu|Australia}} 
| Completion of the penultimate link in the Adelaide–Darwin rail corridor, from Tarcoola to Alice Springs. The new line replaced the ancient narrow-gauge Central Australia Railway that was on a different, more floodprone alignment.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 1990-1995
| {{flagu|Australia}} 
| Melbourne–Adelaide rail corridor – {{convert|600|km|abbr=on}} of convertible sleepers installed in 1990 to facilitate quick conversion in 1995.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2004
| {{flagu|Australia}} 
| Completion of the final link in the Adelaide–Darwin rail corridor, from Alice Springs to Darwin. For about half the distance, the new line replaced the ancient narrow-gauge North Australia Railway that was closed in 1976.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2008–2010
| {{flagu|Australia}}
| North East railway line in Victoria. A {{convert|200|km|abbr=on}} section between Seymour and Albury was converted, changing two parallel tracks of different gauges to double track. The Oaklands line that would otherwise have been left as an orphan was converted in 2009. The cost of converting this {{convert|126|km|abbr=on}} line has been estimated as just over {{currency|13M|AUD}}.<ref>{{cite web |url=http://www.kenjasper.net.au/home/index.php?option=com_content&task=view&id=269&Itemid=9 |title=Jasper supports Oaklands rail line upgrade |publisher=Ken Jasper MLA, Member for Murray Valley |location=Australia |date=9 July 2008 |access-date=1 June 2016 |url-status=dead |archive-url=https://web.archive.org/web/20080718223706/http://www.kenjasper.net.au/home/index.php?option=com_content&task=view&id=269&Itemid=9 |archive-date=18 July 2008}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2012
| {{flagu|Australia}}
| South Australia planned to convert its suburban (broad gauge) network to standard gauge in 2012, in conjunction with proposed electrification works. The Outer Harbour and Belair lines were rebuilt with gauge convertible sleepers and re-sleepering of the Gawler line commenced in 2010. The Seaford line was to commence once the Gawler line was completed.<ref name=rr>{{cite web
|url=http://www.infrastructure.sa.gov.au/RR
|title=Rail Revitalisation|access-date=2008-08-25
|publisher=South Australian Department of Transport, Energy and Infrastructure.}}</ref> However, both gauge conversion and electrification works were suspended due to funding constraints, with work unlikely to proceed for the foreseeable future.{{Update inline|date=May 2022}}{{Citation needed|date=May 2022}}
|-
!style="background-color:#5abf56;"| {{RailGauge|1600mm}} (temporary)
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1950s
| {{flagu|Australia}} 
| The [[Earth:Mount Gambier railway line|Mount Gambier line]] in South Australia was fitted with some 3-gauge steel sleepers when it was "temporarily" converted,{{Ambiguous|reason=Was the entire line re-sleepered? Did standard gauge trains run? |date=May 2022}} pending later proposed conversion to {{RailGauge|1435mm}} (which did not occur, the line being abandoned instead).{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"|{{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
|
| {{flagu|Australia}}
| In Western Australia, the narrow-gauge iron ore railways serving Geraldton port and the new port at Oakajee will be designed for ease of conversion to standard gauge.<ref>{{cite web |url=http://www.mml.net.au/irm/content/projects_oakajee.html |title=Murchison Metals Ltd – Projects : Oakajee Port and Rail |publisher=Mml.net.au |access-date=6 May 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120321013859/http://www.mml.net.au/irm/content/projects_oakajee.html |archive-date=21 March 2012 }}</ref>{{Update inline|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2016–present<!-- Please change the present to the year when the Murray Rail Basin Project is complete, and update the description as well -->
| {{flagu|Australia}}
| In Victoria, several wheat lines amounting to about {{convert|1100|km|abbr=on}} of track, were (or are to be) converted to standard gauge, including:<ref>Railway Digest, October 2015, pg 36</ref> Maryborough to Mildura, Yelta and Murrayville; Sea Lake and Manangatang. Lines will be converted to dual gauge between Gheringhap to Maryborough. This is part of the Murray Basin Rail Project.
|-
!style="background-color:#e1392f;"| {{RailGauge|900mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}}
|2008–2009
| {{Flag|Austria}}
| Pöstlingbergbahn
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 1961
| {{Flagu|Austria}}
| Tschagguns–Partenen railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|1854–1855
| {{flag|Baden}}
| Grand Duchy of Baden State Railway
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| ongoing
| {{Flag|Bangladesh}}
| 
|-
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1898
| {{Flag|Barbados}}
| Barbados Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
| 1880s
| {{flag|Canada}}
| Numerous Provincial Gauge railways in Canada
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1881
| {{flagu|Canada}}
| Toronto, Grey and Bruce Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1883
| {{flagu|Canada}} 
| Toronto and Nipissing Railway with third rail stage.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1938
| {{flag|China|1928}} 
| Chinese–Russian-owned line<ref>{{cite news |url=http://nla.gov.au/nla.news-article56048082 |title=ABOUT BOOKS. |newspaper=The Morning Bulletin |location=Rockhampton, Qld. |date=6 October 1939 |access-date=2014-03-19 |page=9 |via=National Library of Australia}}</ref>
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
|
| {{flagu|China|1928}} 
|South Manchuria Railway, during the Russo-Japanese War
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
|
| {{flagu|China|1928}} 
|South Manchuria Railway, following the Russo-Japanese War
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|
| {{flag|Czech Republic}}
|Muzeum Průmyslových Železnic
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 1956
| {{flag|Democratic Republic of the Congo}}
| Kindu (Lualaba River port) – Kibombo – Kongolo – Kabalo (Lualaba River port and junction with Katanga line) – Nyunzu – Niemba – Kalemie (the port on Lake Tanganyika): This line was isolated meter gauge until 1955, when the gauge was changed for the connection with the Katanga line in 1956.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1932
| {{flagu|Democratic Republic of the Congo}}
| Matadi–Kinshasa Railway converted to {{railgauge|1067mm}} on new alignment.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 
| {{flagu|Democratic Republic of the Congo}}
| Mayumbe line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 1924
| {{flag|Denmark}} 
| Skagen Line in Denmark
|-
|{{RailGauge|500mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
|{{Flag|France}}
| Chemin de Fer Touristique du Tarn
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1520mm}}
| 1941
| {{flag|Nazi Germany|Nazi}} 
| Brest–Minsk<ref name=Stolfi>{{cite book| chapter-url=http://militera.lib.ru/h/stolfi/11.html |title=Hitler's Panzers East: World War II Reinterpreted |chapter=Chapter Eleven. German Logistics: Could the Germans Support an Advance into the Moscow-Gorki Space in the Summer of 1941? |last=Stolfi |first=Russel H. S.|url=http://militera.lib.ru/h/stolfi/index.html| access-date=1 December 2016 |location=Norman and London |publisher=University of Oklahoma Press |via=Military Literature |year=1991}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 1964/65
| {{flag|Germany}} 
| Zabergäu Railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 2004
| {{flagu|Germany}} 
| Malente-Gremsmühlen–Lütjenburg railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 2006
| {{flagu|Germany}} 
| {{ill|Waldheim–Kriebethal railway|de|Bahnstrecke Waldheim–Kriebethal}}
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| ongoing
| {{Flag|India}}
| Project Unigauge
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1923
| {{flag|Japan}}
| Iyo Railway
|-

!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color: #3e3d97;"| {{RailGauge|1372mm}}
| 1959
| {{flagu|Japan}}
| Keisei Electric Railway; converted for through-service into Toei Asakusa Line
|-

!style="background-color:#148a37;"| {{RailGauge|1520mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
|early 1970s
|{{Flag|Kazakh Soviet Socialist Republic}}
|Kokchetav network, {{convert|305|km|abbr=on}}, operational since 1954, partly regauged to Russian gauge.<ref>{{cite web |url=http://www.home.versatel.nl/p.engelbert/KAZ-MPS.html |archive-url=https://web.archive.org/web/20160304062810/http://www.home.versatel.nl/p.engelbert/KAZ-MPS.html |archive-date=4 March 2016 |title=MPS-lines in Kazakhstan (part 1)}}</ref>
|-
!style="background-color:#c55e8d;"| {{track gauge|1000mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{flag|Laos}}
| Don Det–Don Khon narrow-gauge railway
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{flag|Latvia}}
| [[Place:Liepāja|Liepāja]]–Rucava line, 52&nbsp;km military line
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{Flag|Lithuania}}
| {{see|Narrow-gauge railways in Lithuania}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1950s
| {{flag|Yugoslavia}}:<br />{{Flag|Macedonia}}
| Ohrid line
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1910
| {{flag|Mozambique}} / {{flag|Zimbabwe}}
| Beira–Salisbury
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1950
| {{flag|Namibia}}
| Moçâmedes Railway
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1915–1961
| {{flagu|Namibia}}
| Otavi Mining and Railway Company
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1910–
| {{flagu|Namibia}}
| Swakopmund–Windhoek line
|-
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1920
| {{Flag|Nauru}}
| Rail transport in Nauru
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 2018
| {{Flag|Nepal}}
| Jaynagar–Janakpur railway was regauged.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|
| {{flag|New Zealand}}
| Canterbury Provincial Railways
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1912–1914
| {{flag|Nigeria}} 
| Bauchi Light Railway
|-
|
| 
| 
| {{flagu|Nigeria}} 
| Port Harcourt – Onne, convertible sleepers installed since gauge conversion not imminent.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 1915
| {{flag|Norway}} 
| Sulitjelma Line converted from {{RailGauge|750mm}} to dual gauge with {{RailGauge|1067mm}} and when later closed was converted to a road.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1922
| {{flagu|Norway}} 
| Skøyen–Filipstad Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1922
| {{flagu|Norway}} 
| Trondhjem–Støren Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1935
| {{flagu|Norway}} 
| Arendal Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1944
| {{flagu|Norway}} 
| Ålgård Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1941
| {{flagu|Norway}} / {{flagu|Nazi Germany|Nazi}}
| Røros Line in occupied Norway converted by German forces.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1949
| {{flagu|Norway}} 
| Grevskap Line in Norway
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| 2000
| {{Flag|Pakistan}}
| All narrow-gauge tracks in Pakistan were re-gauged or were dismantled.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 2001
| {{flag|Panama}} 
| The Panama Canal Railroad, by then in a dilapidated state, was reconstructed and relaid.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 2009
| {{flag|Peru}} 
| Peru from Huancayo to Huancavelica; {{convert|147|km|abbr=on}}.<ref>Trains, March 2009, p68</ref><ref>{{cite news |url=http://www.railjournal.com/index.php/freight/high-hopes-for-perus-andean-railway.html |title=High hopes for Peru's Andean railway |first=Keith |last=Fender |work=International Railway Journal |location=US |date=8 December 2015 |access-date=1 December 2016}}</ref> 
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2019–ongoing
| {{flag|Philippines}} 
| The Philippine National Railways is reconstructing its dilapidated narrow-gauge network to standard gauge.<ref>{{Cite web |first=Keith |last=Barrow |title=Philippines adopts standard gauge for new lines |url=https://www.railjournal.com/regions/asia/philippines-adopts-standard-gauge-for-new-lines/ |work=International Rail Journal |date=9 August 2016 |accessdate=15 February 2021 }}</ref><ref>{{Cite news |first=Cai |last=Ordinario |title=Neda says 104 flagship projects ready for implementation next year |url=https://businessmirror.com.ph/2020/09/18/neda-says-104-flagship-projects-ready-for-implementation-next-year/ |work=BusinessMirror |date=18 September 2020 |accessdate=15 February 2021 }}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| after 1918
| {{flag|Poland}}
| In part of Poland under Russian control (Russian Partition), some railways were Russian broad gauge. These were converted to standard gauge after Poland gained independence, to unify the national system.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|1924
| {{Flagu|Poland}}
| World War I field railway connecting Nasielsk and Sierpc, 88&nbsp;km long.
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
|1932
| {{Flagu|Poland}}
| World War I field railway from Dūkštas to Druya. After the occupation of the [[Place:Vilnius Region|Vilnius Region]] by Poland, the PKP regauged the line.<ref>{{cite web |title=Linia Dukszty - Druja |url=http://www.archeo.kolej.pl/maron/dukszty.htm |language=pl}}</ref> After World War&nbsp;II the majority of the line ended up in Belorussian SSR and closed in the 1970s.<ref>{{cite web |url=http://home.zonnet.nl/p.engelbert/BY.html |archive-url=https://web.archive.org/web/20160303203343/http://home.zonnet.nl/p.engelbert/BY.html |archive-date=3 March 2016 |title=The TU2 pages}}</ref>
|-
!style="background-color:#83dc76;"|{{RailGauge|1668mm}}
|{{RailGauge|1664mm}}
| 19th century
| {{flag|Portugal|1830}} 
| 
|-
!style="background-color:#83dc76;"| {{RailGauge|1668mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 2004
| {{flagu|Portugal}} 
| The Guimarães line in Portugal was electrified and converted from metre gauge to Iberian broad gauge in 2004.
|-
!style="background-color:#148a37;"| {{RailGauge|1520mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2003-2019
| {{flag|Russia}}
| The railways of Sakhalin Island were converted in sections, first laying the third (outer) rail, making rail lines usable by both Japanese- and Russian-gauge trains. Once the railways throughout the island have been converted to the Russian gauge (by 2012), the inner rail was removed.<ref>[http://infojd.ru/11/sahjd.html Сахалинская узкоколейная железная дорога (The narrow-gauge railways of Sakhalin)] {{webarchive|url=https://archive.today/20131115033833/http://sbchf.narod.ru/11/sahjd.html |date=15 November 2013 }} {{in lang|ru}}</ref>
|-
|
|
| –1918
| {{flag|Russian Empire}} / {{flag|German Empire}}
| World War I as fronts and borders changed
|-
|
|
| –1945
| {{flag|Soviet Union}} / {{flagu|Nazi Germany}}
| World War II as fronts and borders changed
|-
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
!style="background-color:#dceba3;"| {{RailGauge|6ft|first=met}}
| 1897
| {{flagu|Russian Empire|1858}}
| The first railway in Russia connecting Saint Petersburg to Tsarskoye Selo
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| (proposed)
| {{flag|Sierra Leone}} 
|Port Pepel iron ore line, derelict<ref>{{cite web| url = http://allafrica.com/stories/200805191261.html| url-status = dead| archive-url = https://web.archive.org/web/20081024151052/http://allafrica.com/stories/200805191261.html| archive-date = 2008-10-24| title = allAfrica.com: Sierra Leone: African Minerals to Boost Bunbuna Hydro (Page 1 of 1)}} </ref>
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
|
| {{Flag|South Africa}}
| {{see|Two-foot-gauge railways in South Africa}}
|-
!style="background-color:#83dc76;"|{{RailGauge|1668mm}}
|{{RailGauge|1672mm}}
| 19th century
| {{flag|Spain|1874}} 
| 
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1976
| {{flagu|Spain}} 
| The line from Cartagena to Los Blancos was converted at the same time it was extended to Los Nietos.<ref>Ferropedia – Ferrocarril Cartagena – Los Nietos, http://ferropedia.es/wiki/Ferrocarril_Cartagena_-_Los_Nietos</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#83dc76;"| {{RailGauge|1668mm}}
| 2000s
| {{flagu|Spain}} 
| Spain is building its high-speed lines to standard gauge, even though the existing system is Iberian; new cutoff lines are being built with gauge-convertible sleepers.
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1996
| {{Flag|Sri Lanka}}
| The only narrow-gauge lines in Sri Lanka: Kelani Valley line was regauged while the {{Track gauge|762mm}} Uda Pussellawa railway was dismantled.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1960s
| {{flag|Sweden}}
| The Östra Södermanlands Järnväg railway in Mariefred mostly runs on tracks which were converted from standard gauge when it was remade into a heritage railway in the 1960s.
|-
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1934
| {{flagu|Sweden}} 
| The short and isolated standard gauge tram line Långängsbanan built in 1911 in the northern [[Place:Stockholm|Stockholm]] suburb of Stocksund, was converted to the narrow {{RailGauge|891mm|al=on}} of the adjacent Roslag Railway in 1934. Långängsbanan was closed in 1966.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1973-1978
| {{flagu|Sweden}} 
| The railway between Kalmar and Berga was converted during the 1970s.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1972
| {{flagu|Sweden}} 
| The railway between Sandbäckshult and Mönsterås was converted between 1970 and 1972. In Sandbäckshult, the line connects to the Kalmar-Berga line. Both were converted to facilitate standard gauge transport to the pulp mill in Mönsterås.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1953-1962
| {{flagu|Sweden}} 
| Kinnekulle Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|1854
| {{flag|Switzerland}}
| Swiss Northern Railway
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 2022
| {{flag|Switzerland}}
| Waldenburg Railway Being converted as part of a modernisation of the line.
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|2010
| {{flag|Switzerland}}
| Swiss National Railway The former Nationalbahn line from Aarau to Suhr was converted to metre gauge to allow replacement of a street running section on the Menziken–Aarau–Schöftland railway line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| {{RailGauge|1050mm}}
| (proposed)
| {{flag|Syria}}
| Hejaz Railway
|-
|
|
|
| {{flag|Tanzania}}
| Tanzania in 2008 is proposed {{track gauge|1000mm}}/{{track gauge|1067mm|lk=on}} steel sleepers and {{track gauge|1000mm}}/{{track gauge|1435mm}} concrete sleepers to suit gauge conversion.
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1920 onward
| {{flag|Thailand}} 
| From 1920, the standard gauge part of the Siam railway amounting to {{convert|1000|km|abbr=on}} was converted first to third rail, and then to {{RailGauge|1000mm}} (metre gauge) making the whole system metre gauge.<ref>{{cite web |url=http://nla.gov.au/nla.news-article17485953 |title=Break of Gauge – Letters to the Editor |work=The Sydney Morning Herald |location=Australia |via=Trove – National Library of Australia |date=13 June 1938 |access-date=1 June 2016}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| (proposed)
| {{flag|Tunisia}}
|Tunis - Sfax Line
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 1948–1949
| {{flag|Ukrainian Soviet Socialist Republic}}
|Beregovo region network, around {{convert|200|km|abbr=on}}; initially built during the Hungarian Empire and regauged when Ukraine became part of the Soviet Union.<ref name="MPS">{{cite web |url=http://www.home.versatel.nl/p.engelbert/UA-MPS.html |archive-url=https://web.archive.org/web/20160303221103/http://www.home.versatel.nl/p.engelbert/UA-MPS.html |title=MPS lines in Carpathian Ukraine |archive-date=2016-03-03}}</ref>
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 
| {{flagu|Ukrainian Soviet Socialist Republic}}
|Uzhhorod region, {{convert|35|km|abbr=on}}.<ref name=MPS />
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 
| {{flagu|Ukrainian Soviet Socialist Republic}}
|Vapniarka railways, {{convert|140|km|abbr=on}}.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1844
| {{flag|United Kingdom}}:<br />{{flag|England}} 
| The Eastern Counties Railway, constructed in 1839 and the connecting Northern and Eastern Railway, constructed in 1840.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|
| {{flagu|United Kingdom}}:<br />{{flag|Wales}}
| Eigiau Reservoir Tramway
|-
!style="background-color:#b0b0b0;"| {{RailGauge|381mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
|1916
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Fairbourne Railway
|-
|{{RailGauge|12.25in|first=met}}
!style="background-color:#b0b0b0;"| {{RailGauge|381mm}}
|1986
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Fairbourne Railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
|1986
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Gorseddau Junction and Portmadoc Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#dceba3;"| {{Track gauge|7ft0.25in|addcat=no|lk=on|first=met}}
| 1892
| {{flagu|United Kingdom}}:<br />{{flagu|England}} / {{flagu|Wales}}
| Great Western Railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| Lynton and Barnstaple Railway
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 2002
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| Southport Pier Tramway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1950
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| Southport Pier Tramway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#dceba3;"| {{Track gauge|7ft0.25in|addcat=no|lk=on|first=met}}
| 1872
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Teifi Valley Railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|23.75in|first=met}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 1901–1902
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Vale of Rheidol Railway
|-
| {{RailGauge|2ft8.5in|first=met}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1884
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| Volk's Electric Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| {{RailGauge|58in|first=met}}
| 1866
| {{flagu|United States}}<br />{{flag|New Jersey}} 
| Morris and Essex converted in 12 days<ref>https://timesmachine.nytimes.com/timesmachine/1866/07/03/90433709.pdf ''The New York Times'', 3 July 1866</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
| 1871
| {{flagu|United States}}<br />{{flag|Maine}} 
| Maine Central Railroad Company
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1879
| {{flagu|United States}}<br />{{flag|California}} 
| Monterey Branch Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1881
| {{flagu|United States}}<br />{{flag|Colorado}} 
| Denver to Pueblo on Denver &amp; Rio Grande Railroad.<ref>{{cite book| title=Colorado Railroads| chapter=Part II – Expansion And Consolidation| author=Wilkins, Tivis (Tiv) E.| publisher=Pruett Publishing Company| year=1974}}</ref> This began a progressive and gradual conversion to standard gauge across Colorado, wherever the traffic justified the conversion
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1886
| {{flagu|United States}} 
| ''AN ACT to establish the gauge of the Pacific railroad and its branches.''<ref>{{cite web|url=http://www.cprr.org/Museum/Pacific_Railroad_Acts.html#1863|title=An act to establish the gauge of the Pacific railroad and its branches |publisher=Congress |location=US |via=Central Pacific Railroad Photographic History Museum |date=1 March 1863 |access-date=1 June 2016}}</ref> set the standard for the First transcontinental railroad and encouraged previously laid lines to regauge. Southern railroads were not converted until 1886<ref>{{Cite web|url=http://southern.railfan.net/ties/1966/66-8/gauge.html|title = The Days They Changed the Gauge}}</ref> when they were regauged to 1448&nbsp;mm (4&nbsp;ft 9&nbsp;in). This was functionally compatible with standard gauge, final conversions taking place as track was maintained.{{main|Track gauge in the United States#Towards standardization}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1906
| {{flagu|United States}}<br />{{flag|California}}
| Market Street Railway Polk cable car rebuilt as standard gauge electric trolley following the 1906 San Francisco earthquake<ref>{{cite book |last1=Smallwood |first1=Charles A. |title=The White Front Cars of San Francisco |date=1978 |publisher=Interurbans |isbn=9780916374327 |url=https://openlibrary.org/books/OL4750365M/The_white_front_cars_of_San_Francisco |page=120}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1898
| {{flagu|United States}}<br />{{flag|California}}
| San Diego Electric Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1902
| {{flagu|United States}}<br />{{flag|Iowa}} 
| Burlington and Northwestern Railway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1906
| {{flagu|United States}}<br />{{flag|California}}
| Venice Short Line when sold from the Los Angeles Pacific Railroad to the Pacific Electric
|-
!style="background-color:#1e407c;color:white"| {{RailGauge|pennsylvania|first=met}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1997
| {{flagu|United States}}<br />{{flag|Louisiana}}
| The Riverfront Streetcar Line of the New Orleans streetcar system was converted to conform with the rest of the historic streetcar system.
|-
!style="background-color:#568dd0;"| {{track gauge|1435mm}}
!style="background-color:#148a37;"| {{track gauge|1520mm}}
|
| [[Place:Central Asia|Central Asia]]
| While China and Europe are connected by rail, and while both are mainly {{track gauge|1435mm}}, the intervening Central Asia Railways are {{track gauge|1520mm|lk=on}} gauge.  There are discussions about facilitating an eventual linkage of the Chinese and European standard gauge system. {{see|Eurasian Land Bridge}}
|}

== See also ==
* Break-of-gauge

== References ==
{{reflist}}


[[Category:Track gauges]]

{{Sourceattribution|List of gauge conversions}}