Speed Converter
Convert km/h, mph, m/s, knots, and ft/s.
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| Unit | Converted value |
|---|---|
| Meter per second (m/s) | 0.277777777778 |
| Kilometer per hour (km/h) | 1 |
| Mile per hour (mph) | 0.621371192237 |
| Knot (kn) | 0.539956803502 |
| Foot per second (ft/s) | 0.911344415281 |
How speed unit conversion works
This speed converter changes values between km/h, mph, m/s, knots, and ft/s. It is useful for driving, running, cycling, marine use, aviation, sports data, and physics practice.
Speed is distance divided by time. When converting speed units, both distance and time units may need conversion, such as between km/h and m/s.
Formula or logic
- 1 m/s = 3.6 km/h
- 1 mph ≈ 1.60934 km/h
- 1 knot = 1 nautical mile per hour
- Speed = distance ÷ time
Example
A speed of 90 km/h equals 25 m/s. When comparing running pace and speed, check whether the value means minutes per kilometer or kilometers per hour.
Common questions
How do I convert km/h and m/s quickly?
Multiply m/s by 3.6 to get km/h, or divide km/h by 3.6 to get m/s.
Where are knots used?
Knots are common in marine, aviation, and wind-speed contexts.
Are speed and pace the same?
No. Speed is distance per time, while pace is time per distance.