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Science
Speed Conversion Table
Values shown for 1 Meter per Second
About Speed Conversions
Speed units reflect the diverse contexts where velocity is measured. Road speeds use kilometers per hour (most countries) or miles per hour (US, UK), with the exact relationship being 1 mph = 1.609344 km/h. Aviation standardizes on knots (nautical miles per hour), where 1 knot equals exactly 1.852 km/h, because nautical miles correspond directly to minutes of arc of latitude — making navigation calculations simpler. The Mach number, expressing speed relative to the local speed of sound (~340 m/s at sea level, varying with temperature and altitude), is used in aeronautics and supersonic engineering. Our converter handles all these units with exact conversion factors.
| Unit Name | Symbol | Value | Formula |
|---|---|---|---|
| Foot per Second | ft/s | 3.28084 | multiply by 0.3048 |
| Kilometer per Hour | km/h | 3.6 | divide by 3.6 |
| Knot | kn | 1.94384 | multiply by 1852/3600 |
| Mach | Ma | 0.00293867 | multiply by 340.29 (at sea level, 15°C) |
| Meter per Second | m/s | 1 | base unit |
| Mile per Hour | mph | 2.23694 | multiply by 0.44704 |