Speed Converter
Speed Converter
Convert speed units with context analysis
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Speed Converter: Instant Unit Conversion
Convert any speed — mph, km/h, knots, m/s, ft/s — with 100% precision. Perfect for drivers, pilots, runners, or weather tracking. No rounding. No data stored.
Example: 100 km/h = 62.14 mph | 60 mph = 26.82 m/s | 1 knot = 1.852 km/h.
Real-World Use Cases
Driving & Speed Limits
Convert 120 km/h → 74.56 mph for US highways.
Running & Cycling
5:00 min/km pace = 12 km/h = 7.46 mph.
Aviation & Boating
200 knots = 370.4 km/h = 230.16 mph.
Weather & Wind
50 km/h gust = 31.07 mph = 27 knots.
Quick Reference Table
| Unit | Symbol | Equals (in m/s) |
|---|---|---|
| Kilometers per hour | km/h | 0.27778 |
| Miles per hour | mph | 0.44704 |
| Meters per second | m/s | 1 |
| Feet per second | ft/s | 0.3048 |
| Knots | knot | 0.51444 |
Pro Speed Tips
Memorize These
- 100 km/h ≈ 62 mph
- 60 mph ≈ 100 km/h
- 1 knot ≈ 1.15 mph
Speed Limits
- US: 70 mph = 112.65 km/h
- EU: 130 km/h = 80.78 mph
- UK: 70 mph = 112.65 km/h
Why Trust This Converter?
Accuracy: Uses international BIPM & ICAO standards — same as aviation, GPS, and weather services.
Privacy: No inputs stored. Results vanish instantly.
Speed: JS-powered, works offline (PWA-ready).