Tennis & racquet
Serve Speed Converter
Convert a serve speed between km/h, mph and m/s, exactly.
Free · instant · no sign-upDeterministic
Result
Speed200km/h
Speed124.3mph
Speed55.6m/s
The formula
Unit conversion
1 mph = 1.609344 km/h; 1 m/s = 3.6 km/h
Source: Exact definitions
What it means
- Compare serve speeds quoted in different units across broadcasts and tools.
Limitations
- A pure unit conversion — it does not measure your serve.
Educational only
This is a deterministic tool: the same inputs always give the same result. It is for learning and planning, not a substitute for coaching or measurement.