Track gauges around the world

Different rail gauges are in use around the world. The rail systems of most countries predominantly use one gauge or another as a national standard, in some cases due to a legal mandate.

Gauge	Name	Usage
1,000 mm (3 ft 3+3⁄8 in)	Metre gauge
1,067 mm (3 ft 6 in)	Three foot six inch gauge	Metzetta (vestigial), Jinju (MZ)
4 ft (1,219 mm)	Hendalarskische Urspurweite	Hendalarsk (many regional lines within Hendalarsk; as the name implies, this was the original Hendalarskara gauge before main lines were standardised for ease of international transit), Austro-Caldera (called "Calderan Standard")
1,435 mm (4 ft 8+1⁄2 in)	Standard gauge	Alstin, Burgundie, Caphiria, Cartadania, Eldmora-Regulus, Hendalarsk (key mainlines and international connections), Pelaxia, Urcea, Yonderre, Lapody, Rhotia *the wide adoption of standard gauge in Levantia is based on the guage being used by the hospital trains run by the Order of the Obsidian Sparrow in the First Great War. -Same measurements, called Audonian Economized Rail Gauge: Battganuur, Bulkh, United Audonian Emirates, Umardwal, Yanuban, Zaclaria -Same measurements, called Levantine Informed Gauge: Pursat, Kandara, Tapakdore, Peshabiwar, Pukhgundi
1,520 mm (4 ft 11+27⁄32 in)	Five foot and 1520 mm gauge
1,524 mm (5 ft)	Northern Standard	Koskenkorva (KR), Faneria, Vithinja
1,600 mm (5 ft 3 in)	Five foot three inch gauge	Kiravian Federacy (except Koskenkorva), Metzetta (main network)
1,668 mm (5 ft 5+21⁄32 in)	Pelaxian gauge	Pelaxia
1,676 mm (5 ft 6 in)	Five foot six inch gauge	Daxia, Huoxia