About this tool
Speed Converter — Convert between km/h, mph, m/s, knots and more. Free, fast and private. Runs entirely in your browser at Quick Calci Tools.
Examples
Common scenarios for the Speed Converter.
Highway km/h → mph
- value
- 100
- from
- kmh
- to
- mph
100 km/h ≈ 62.14 mph.
Sprint m/s
- value
- 10
- from
- ms
- to
- kmh
10 m/s = 36 km/h.
Knots to mph
- value
- 20
- from
- kn
- to
- mph
20 kn ≈ 23.02 mph.
Who uses the Speed Converter?
Common scenarios and audiences for this tool.
Drivers abroad
Read rental speed limits in familiar mph while the car shows km/h.
Sailors
Compare knot instruments to statute mph for mixed briefing docs.
Run coaches
Turn track splits between m/s and pace-friendly km/h.
Drone pilots
Match manufacturer m/s caps against local regulation wording.
Meteorology class
Translate forecast m/s gusts into mph stories for US readers.
Frequently asked questions
Everything you need to know about the Speed Converter.