Convert mph to km/h
Use the live converter below to translate between Mile per hour (mph) and Kilometer per hour (km/h). Scroll further for quick examples, formula tips, and related units.
Convert
mph → km/h
Formula
1 mph = 1.6093 km/h
Conversion sourcesTap or click to view references
The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table
Results update as you type. Swap the direction to convert back from km/h to mph.
mph to km/h quick table
Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.
| Mile per hour (mph) | Kilometer per hour (km/h) |
|---|---|
| 0.25 mph | 0.4023 km/h |
| 0.5 mph | 0.8047 km/h |
| 1 mph | 1.6093 km/h |
| 2 mph | 3.2187 km/h |
| 5 mph | 8.0467 km/h |
| 10 mph | 16.0934 km/h |
| 25 mph | 40.2336 km/h |
| 100 mph | 160.9344 km/h |
km/h back to mph
Keep the reciprocal handy when double-checking calculations or undoing a conversion.
| Kilometer per hour (km/h) | Mile per hour (mph) |
|---|---|
| 0.25 km/h | 0.1553 mph |
| 0.5 km/h | 0.3107 mph |
| 1 km/h | 0.6214 mph |
| 2 km/h | 1.2427 mph |
| 5 km/h | 3.1069 mph |
| 10 km/h | 6.2137 mph |
| 25 km/h | 15.5343 mph |
| 100 km/h | 62.1371 mph |
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