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Speed Converter

Speed ​​converter: km/h, mph, knots and m/s

6 min read

2026-02-03

Speed ​​unit conversion guide. How to convert between km/h, mph, knots and m/s with formulas and tables.

Speed units

Kilometers per hour (km/h)

Standard unit in most countries. Used on speedometers, road signs.

Miles per hour (mph)

Standard in the USA and UK. 1 mph = 1.609 km/h.

Meters per second (m/s)

SI unit for scientific calculations. 1 m/s = 3.6 km/h.

Knots

Used in aviation and navigation. 1 knot = 1.852 km/h = 1 nautical mile per hour.

Translation table

km/hmphm/snodes
106.212.785.40
5031.0713.8926.99
10062.1427.7853.99
12074.5633.3364.79
200124.2755.56107.99

Speeds in nature and technology

•

Pedestrian: 5 km/h = 3.1 mph

•

Cyclist: 20 km/h = 12.4 mph

•

Limit in the city: 60 km/h = 37.3 mph

•

On the highway: 110 km/h = 68.4 mph

•

Speed of sound: 1235 km/h = 767 mph = Mach 1

•

Speed of light: 299,792 km/s = 1,079,252,848 km/h

See also: Length Converter, Temperature Converter, Fuel Converter

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