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Speed Converter

Convert km/h, mph, m/s, knots, feet per second, and Mach.

Value

From

How it works

Every speed is first expressed in meters per second, then converted to the target unit. Example: 60 mph × 0.44704 = 26.82 m/s = 96.56 km/h. Mach uses the speed of sound at sea level and 15 °C (about 340.29 m/s).

FAQ

Is this calculator free?

Yes. No signup is needed and nothing you enter is stored.

Is the result exact?

Results are rounded for display. For financial, medical, or legal decisions, confirm with a professional.

Do my numbers leave my device?

No. The calculation runs in your browser.