Graphic list of track gauges

Minimum
  Fifteen inch 381 mm (15 in)

Narrow
  600 mm,
Two foot
597 mm
600 mm
603 mm
610 mm
(1 ft 11 ½ in)
(1 ft 11 ⅝ in)
(1 ft 11 ¾ in)
(2 ft)
  750 mm,
Bosnian,
Two foot six inch,
800 mm
750 mm
760 mm
762 mm
800 mm
(2 ft 5 ½ in)
(2 ft 5 15⁄16 in)
(2 ft 6 in)
(2 ft 7 ½ in)
  Swedish three foot,
900 mm,
Three foot
891 mm
900 mm
914 mm
(2 ft11 3⁄32 in)
(2 ft 11 7⁄16 in)
(3 ft)
  Metre 1,000 mm (3 ft 3 ⅜ in)
  Three foot six inch 1,067 mm (3 ft 6 in)
  Four foot six inch 1,372 mm (4 ft 6 in)

  Standard 1,435 mm (4 ft 8 ½ in)

Broad
  1520 mm,
Five foot
1,520 mm
1,524 mm
(4 ft 11 27⁄32 in)
(5 ft)
  Five foot three inch 1,600 mm (5 ft 3 in)
  Iberian 1,668 mm (5 ft 5 21⁄32 in)
  Five foot six inch 1,676 mm (5 ft 6 in)
  Six foot 1,829 mm (6 ft)
  Brunel 2,140 mm (7 ft ¼ in)