| Narrow gauge |
- 2 foot and 600 mm
- 2 ft 3 in (686 mm)
- 750 mm (2 ft 5+1⁄2 in)
- 760 mm (2 ft 5+15⁄16 in)
- 2 ft 6 in (762 mm)
- 800 mm (2 ft 7+1⁄2 in)
- 891 mm (2 ft 11+3⁄32 in) Swedish three foot
- 900 mm (2 ft 11+7⁄16 in)
- 3 ft (914 mm)
- 950 mm (3 ft 1+3⁄8 in) Italian metre gauge
- 1,000 mm (3 ft 3+3⁄8 in) metre gauge
- 1,050 mm (3 ft 5+11⁄32 in),
- 1,055 mm (3 ft 5+1⁄2 in),
- 3 ft 6 in (1,067 mm)
- 1,093 mm (3 ft 7 in),
- 1,100 mm (3 ft 7+5⁄16 in),
- 1,200 mm (3 ft 11+1⁄4 in)
- 4 ft (1,219 mm)
- 4 ft 1 in (1,245 mm), Middleton Railway
- 4 ft 6 in (1,372 mm), Scotch gauge
- 4 ft 6+1⁄2 in (1,384 mm), Scotch gauge
- 4 ft 7+3⁄4 in (1,416 mm)
- 4 ft 8 in (1,422 mm), almost standard gauge
- 4 ft 8+1⁄4 in (1,429 mm)
- 1,432 mm (4 ft 8+3⁄8 in)
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| Broad gauge |
- 1,440 mm (4 ft 8+11⁄16 in)
- 1,445 mm (4 ft 8+7⁄8 in)
- 1,450 mm (4 ft 9+3⁄32 in)
- 4 ft 9+3⁄8 in (1,457 mm)
- 1,458 mm (4 ft 9+13⁄32 in)
- 4 ft 10+7⁄8 in (1,495 mm), Toronto gauge
- 5 ft / 1,524 mm and 1,520 mm (4 ft 11+27⁄32 in), Russian gauge.
- 5 ft 2+1⁄4 in / 1,581 mm and 5 ft 2+1⁄2 in / 1,588 mm, Pennsylvania gauge
- 5 ft 3 in (1,600 mm), Irish gauge
- 5 ft 4+1⁄2 in (1,638 mm), Baltimore gauge
- 1,668 mm (5 ft 5+21⁄32 in), Iberian gauge
- 5 ft 6 in (1,676 mm), Indian gauge
- 1,945 mm (6 ft 4+9⁄16 in), De Arend
- 7 ft 1⁄4 in (2,140 mm), Brunel gauge
- 3,000 mm (9 ft 10+1⁄8 in), Breitspurbahn
- 8,200 mm (26 ft 10+27⁄32 in), Lärchwandschrägaufzug
- 9,000 mm (29 ft 6+5⁄16 in), Krasnoyarsk ship lift
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