Speed Converter
Convert between m/s, km/h, mph, knots, and ft/s.
Result
Informational only; verify critical results independently.
How to use
- Enter the speed value (e.g. 60 or 100).
- Select the unit of the value (mph, km/h, m/s, knots, ft/s).
- Select the unit you want (e.g. km/h if you entered mph).
- The result updates as you type; copy if needed.
- Use for driving limits, wind speed, or any speed in daily or technical use.
- Conversions use standard definitions; no data is sent to a server.
Examples
- 60 mph to km/h (≈ 96.6 km/h)
- 100 km/h to mph (≈ 62.1 mph)
- 10 m/s to ft/s (≈ 32.8 ft/s)
- 15 knots to km/h (≈ 27.8 km/h)
- 5 ft/s to m/s (≈ 1.52 m/s)
- 120 km/h to mph and knots
FAQ
- Knots?
- 1 knot = 1852 m per hour (exact); we convert via m/s.
- US vs UK mph?
- Mile and hour are the same; 1 mph = 1.609344 km/h in both.
- Why not include Mach or speed of light?
- We stick to common everyday units; use a scientific converter for those.
- Rounding?
- We show a readable number of decimals; the underlying conversion is exact.
- Can I convert wind speed?
- Yes. Use knots or m/s for weather; convert to mph or km/h if you prefer.
- Where is this calculated?
- In your browser only; nothing is sent to our servers.
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Last updated: 2025-09-16