List of track gauges
This list presents an overview of railway track gauges by size. A gauge is measured between the inner faces of the rails.
File:Australia OpenRailway gauge map.agr.png|thumb|
The large network of narrow-gauge sugar cane light railways, almost all 610 mm gauge, is not shown. See Rail gauge in Australia.
Track gauges by size
Minimum and ridable miniature railways
For ridable miniature railways and minimum-gauge railways, the gauges are overlapping. There are also some extreme narrow-gauge railways listed. See: Distinction between a ridable miniature railway and a minimum-gauge railway for clarification.Model railway gauges are covered in rail transport modelling scales.
File:Orchid Line - 2009-10-25.jpg|thumb|right|Train with model Southern Railway Schools class on the dual-gauge Orchid Line
Narrow gauge
Railways with a track gauge between and.File:Nevada State Railroad Museum - panoramio.jpg|thumb|Dual-gauge track in Nevada: standard and
Standard gauge
Standard gauge is gauge. It is the most widely-used gauge: about 60% of the world's railway mileage is standard gauge.File:Different gauges in China Railway Museum.jpg|thumb|Different gauges, from left: 1435mm, 1000mm and 600mm, China Railway Museum, Beijing.
Several railways use gauges very close to standard gauge, including: