Speed Converter
Convert speed between common units (km/h, mph, m/s, knots). Includes quick comparisons and a reference table.
Enter a number, choose units, then convert. Press Ctrl/Cmd + Enter.
| Unit | Converted value |
|---|
Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
This tool converts by translating the input into a base unit (m/s), then converting to the target unit. Standard factors are used (e.g., 1 mph = 0.44704 m/s, 1 knot = 0.514444… m/s).
Examples
- 60 km/h ≈ 37.282 mph
- 100 mph ≈ 160.934 km/h
- 10 m/s = 36 km/h
- 20 knots ≈ 10.289 m/s
FAQ
- Which speed units are supported?
This converter supports kilometers per hour (km/h), miles per hour (mph), meters per second (m/s), and knots (kt).
- How accurate are the conversions?
Conversions use standard unit definitions and are shown with your chosen rounding. Minor differences can come from rounding or display precision.
- Can I convert negative speeds?
Yes. Negative values are allowed for calculations (e.g., relative velocity).
- Are my inputs stored?
No. All calculations run locally in your browser.