KPH ↔ MPH
Instant speed conversion. Precise, beautiful, and completely free.
Speed in Perspective
What does 100 km/h actually feel like? Here are some real-world speed references to help you visualize the numbers.
Walking
Cycling
Sprinting
City Driving
Highway
Racing Car
High-Speed Train
Aircraft
Conversion Reference
Need a quick lookup? Use our reference charts below for the most common speed conversions used in travel and logistics.
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 1 km/h | 0.6214 mph |
| 2 km/h | 1.2427 mph |
| 3 km/h | 1.8641 mph |
| 4 km/h | 2.4855 mph |
| 5 km/h | 3.1069 mph |
| 10 km/h | 6.2137 mph |
| 15 km/h | 9.3206 mph |
| 20 km/h | 12.4274 mph |
| 25 km/h | 15.5343 mph |
| 30 km/h | 18.6411 mph |
| 40 km/h | 24.8548 mph |
| 50 km/h | 31.0686 mph |
| 60 km/h | 37.2823 mph |
| 70 km/h | 43.4960 mph |
| 80 km/h | 49.7097 mph |
| 90 km/h | 55.9234 mph |
| 100 km/h | 62.1371 mph |
| 110 km/h | 68.3508 mph |
| 120 km/h | 74.5645 mph |
| 130 km/h | 80.7782 mph |
| 140 km/h | 86.9919 mph |
| 150 km/h | 93.2057 mph |
| 200 km/h | 124.2742 mph |
| 250 km/h | 155.3427 mph |
| 300 km/h | 186.4113 mph |
Master the Math
Whether you need exact precision or a quick mental estimate, understanding the conversion is easier than you think.
The Exact Formula
The mathematical standard for converting between metric and imperial speed units.
mph = km/h × 0.621371km/h = mph × 1.60934Mental Math Trick
No calculator? Use this simple '8 and 5' rule for quick estimates on the go.
- 1Divide km/h by 8
- 2Multiply result by 5
- 3Result is approximate mph
Common Limits
Quick reference for international speed limits you'll encounter abroad.
Why Convert Speeds?
While most of the world uses the metric system (Kilometers), the US and UK still rely on imperial units (Miles). This can be confusing for international travelers renting cars or athletes tracking their pace abroad. Our converter bridges this gap instantly, ensuring you're always aware of your actual speed, no matter what units are on the signs.
Common Questions
Everything you need to know about speed units and how to switch between them.