Speed Converter
Convert between speed units — kilometers per hour, miles per hour, meters per second and knots.
Result updates as you type
Recent:
1 km/h = 0.62137169 mph
Popular speed conversions
Kilometers per Hour to Miles per Hour
Kilometers per Hour to Meters per Second
Kilometers per Hour to Knots
Miles per Hour to Kilometers per Hour
Miles per Hour to Meters per Second
Miles per Hour to Knots
Meters per Second to Kilometers per Hour
Meters per Second to Miles per Hour
Meters per Second to Knots
Knots to Kilometers per Hour
Knots to Miles per Hour
Knots to Meters per Second
Common speed conversions
Supported speed units
| Unit | Symbol | Reference |
|---|---|---|
| km/h | km/h | 1 km/h = 0.277778 Meters per Second. |
| mph | mph | 1 mph = 0.44704 Meters per Second. |
| m/s | m/s | Base unit for speed conversions. |
| Knot | kn | 1 Knot = 0.514444 Meters per Second. |
4 units supported · instant, precise results
How speed conversion works
Each speed conversion is performed by first expressing the input in a single base unit (Meters per Second) and then scaling to the target unit. Factors are stored to full precision, so a value converted to another unit and back returns the original number. Results here match the formula, worked examples and reference table shown on every individual conversion page.
Frequently asked questions
- What speed units can I convert?
- This speed converter supports Kilometers per Hour, Miles per Hour, Meters per Second and Knots. Select any two units to convert between them instantly.
- Are the speed conversions accurate?
- Yes. Every conversion uses standard, internationally recognised factors and is calculated to full precision, then rounded only for display.
- Can I use this speed converter on mobile?
- Yes. The converter works in any modern browser on phones, tablets and desktops, with no installation required.