Speed Converter
mph, km/h, m/s, knots — one tool.
Convert between every common unit of speed.
Part of: Unit Conversion Tools
Enter the value to convert below
Fields marked optional can be skipped; results update as you type
6
All conversions
m/s27.777778
km/h100
mph62.137119
Knots53.995727
ft/s91.134442
100 km/h = 62.137119 mph.
- 1 mph
- 1.609344 km/h
- m/s
- 27.777778
Reverse: 1 mph = 1.609344 km/h.
Before you use the converted value
Confirm the starting unit, the target unit, and the amount before copying the answer. Conversions are exact math, but real-world use may still need rounding, tolerance, safety margin, or a local convention.
If the converted value affects cost, quantity, time, or safety, use the related calculator or guide before making the final decision.
More about this tool
How to use this tool
- Enter a value.
- Pick source and target units.
Examples
100 km/h
= 62.14 mph = 27.78 m/s = 53.996 knots
Next up
Frequently asked questions
› What is a knot? Definition
One nautical mile per hour. 1 knot = 1.852 km/h.