Minimum-gauge Minimum-gauge railways 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 ) Standard gauge 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 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 List of track gauge articles Gauge differences Transport mode Categories