Speed Converter
Free speed unit converter for km/h, m/s, mph, knots, ft/s, and Mach. Enter a value, pick its unit, and see every conversion in one table.
Input
Result
Meters per second (m/s)
27.777778m/s
| Unit | Symbol | Converted value |
|---|---|---|
| Meters per second | m/s | 27.777778 |
| Kilometers per hour | km/h | 100 |
| Miles per hour | mph | 62.137119 |
| Knots | kn | 53.99568 |
| Feet per second | ft/s | 91.134442 |
| Mach | M | 0.08163 |
How it works
- Supports six units: meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots (kn), feet per second (ft/s), and Mach (M).
- Meters per second (m/s) is the base unit. Your input is first converted to m/s and then to every other unit. km/h is divided by 3.6 to get m/s, a knot is one nautical mile per hour (1852 m/h), and mph uses 1 mi = 1609.344 m.
- Mach is measured relative to the speed of sound, which changes with air temperature and altitude. This tool treats 1 Mach as the standard sea-level speed of sound at 15°C, roughly 340.29 m/s.
- To use it, enter the number you want to convert and pick its unit from the dropdown. As soon as you select a unit, the results for every unit appear in the table.
- Results are rounded to about six significant digits, and very large or very small numbers switch to scientific notation. Values are approximate, so double-check the original definitions for precise or official use.
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