Speed converters

Road, wind and sea speeds: km/h, mph, m/s, knots and ft/s.

All speed conversions

• kilometers per hour to miles per hour
• miles per hour to kilometers per hour
• kilometers per hour to meters per second
• meters per second to kilometers per hour
• meters per second to miles per hour
• miles per hour to meters per second
• knots to kilometers per hour
• kilometers per hour to knots
• knots to miles per hour
• miles per hour to knots
• feet per second to meters per second
• meters per second to feet per second
• feet per second to miles per hour
• miles per hour to feet per second

The units

kilometer per hour (km/h)

Used for road speed limits and car speedometers in most countries.

mile per hour (mph)

Exactly 0.44704 m/s. Used for road speeds in the US and UK.

meter per second (m/s)

The SI unit of speed. Used in physics and for wind speed in forecasts.

knot (kn)

One nautical mile per hour, about 1.852 km/h. Used at sea and in aviation.

foot per second (ft/s)

Exactly 0.3048 m/s. Used for projectile and fluid speeds in the US.

Other converters: Length, Weight, Area, Volume, Temperature, Data storage, Indian number units.