How to Use Speed Converter
The Speed Converter translates a speed value between metric, imperial, and nautical units.
- Enter the value — Any numeric speed.
- Pick the source unit — m/s, km/h, mph, ft/s, kn, or cm/s.
- Pick the target unit — Any of the above.
- Read the result — The Speed Converter also lists all other equivalents.
Formula & Theory — Speed Converter
The Speed Converter routes through m/s as the SI base:
m/s = value × factor(from)
result = m/s / factor(to)| Unit | Factor (to m/s) |
|---|---|
| m/s | 1 |
| km/h | 1 / 3.6 |
| mph | 0.44704 |
| ft/s | 0.3048 |
| kn (knot) | 0.514444 |
| cm/s | 0.01 |
Assumptions and Limits
Conversion factors are exact constants. The Speed Converter rounds output for readability but keeps full precision internally.
Use Cases for Speed Converter
- Driving abroad — Convert posted mph limits into km/h.
- Running and cycling — Compare metric and imperial training paces.
- Aviation and sailing — Translate knots into km/h or mph for non-pilots.
- Physics homework — Move between SI and imperial units quickly.
The Speed Converter is a one-stop helper for everyday speed unit questions.