km/h to mph converter
1 km/h = 0.621371 mph
To convert kilometers per hour to miles per hour, multiply by 0.621371 (or divide by 1.609344). Type any speed below — the result updates as you type, and the swap button converts the other way.
Formula: mph = km/h × 0.6213712
km/h to mph formula
mph = km/h × 0.621371
A mile is exactly 1.609344 kilometers, so one kilometer is 1 ÷ 1.609344 = 0.621371 miles. The same factor converts speeds: 1 km/h = 0.621371 mph.
Examples:
Quick mental math
- Divide by 1.6 — 120 km/h ÷ 1.6 = 75 mph (exact: 74.56).
- Multiply by 5, divide by 8 — 80 km/h × 5 ÷ 8 = 50 mph (exact: 49.71).
- Take 60% for a rough figure — 50 km/h ≈ 30 mph (exact: 31.07).
km/h to mph conversion chart
Values rounded to two decimals. Click a highlighted speed for its detailed page.
| km/h | mph |
|---|---|
| 10 km/h | 6.21 mph |
| 20 km/h | 12.43 mph |
| 30 km/h | 18.64 mph |
| 40 km/h | 24.85 mph |
| 50 km/h | 31.07 mph |
| 60 km/h | 37.28 mph |
| 70 km/h | 43.5 mph |
| 80 km/h | 49.71 mph |
| 90 km/h | 55.92 mph |
| 100 km/h | 62.14 mph |
| 110 km/h | 68.35 mph |
| 120 km/h | 74.56 mph |
| 130 km/h | 80.78 mph |
| 140 km/h | 86.99 mph |
| 150 km/h | 93.21 mph |
| km/h | mph |
|---|---|
| 160 km/h | 99.42 mph |
| 170 km/h | 105.63 mph |
| 180 km/h | 111.85 mph |
| 190 km/h | 118.06 mph |
| 200 km/h | 124.27 mph |
| 210 km/h | 130.49 mph |
| 220 km/h | 136.7 mph |
| 230 km/h | 142.92 mph |
| 240 km/h | 149.13 mph |
| 250 km/h | 155.34 mph |
| 260 km/h | 161.56 mph |
| 270 km/h | 167.77 mph |
| 280 km/h | 173.98 mph |
| 290 km/h | 180.2 mph |
| 300 km/h | 186.41 mph |
Common speed limits in km/h and mph
| km/h | mph | Where you'll see it |
|---|---|---|
| 30 km/h | 18.6 mph | City-centre zones in many European cities |
| 50 km/h | 31.1 mph | Urban roads across most of Europe |
| 80 km/h | 49.7 mph | Many two-lane rural roads in France |
| 90 km/h | 55.9 mph | Conventional rural roads in Spain |
| 100 km/h | 62.1 mph | Highways in Canada and Australia; rural roads in Germany |
| 110 km/h | 68.4 mph | Some Australian and Canadian highways |
| 120 km/h | 74.6 mph | Motorways in Spain |
| 130 km/h | 80.8 mph | Motorways in France and Italy; advisory speed on German Autobahns |
| 140 km/h | 87 mph | Motorways in Poland |
Speed limits change and vary by vehicle type and local signs. Always follow the posted limit. Want to check your actual speed? Use the GPS speedometer.
km/h, kph or kmph?
They're the same unit. km/h is the official SI symbol, kph is common in American and British English, and kmph is often used in India. So “kmh to mph”, “kph to mph” and “kmph to mph” are all the same conversion. Miles per hour is written mph (sometimes “mi/h”).
Converting the other way? Use the mph to km/h converter. For knots, m/s and other units, open the speed converter.
Popular km/h to mph conversions
- 25 km/h to mph
- 30 km/h to mph
- 35 km/h to mph
- 40 km/h to mph
- 45 km/h to mph
- 50 km/h to mph
- 55 km/h to mph
- 60 km/h to mph
- 65 km/h to mph
- 70 km/h to mph
- 80 km/h to mph
- 90 km/h to mph
- 95 km/h to mph
- 100 km/h to mph
- 110 km/h to mph
- 120 km/h to mph
- 130 km/h to mph
- 140 km/h to mph
- 145 km/h to mph
- 150 km/h to mph
- 152 km/h to mph
- 160 km/h to mph
- 170 km/h to mph
- 180 km/h to mph
- 190 km/h to mph
- 200 km/h to mph
- 210 km/h to mph
- 220 km/h to mph
- 230 km/h to mph
- 240 km/h to mph
- 250 km/h to mph
- 260 km/h to mph
- 270 km/h to mph
- 275 km/h to mph
- 280 km/h to mph
- 285 km/h to mph
- 299 km/h to mph
- 300 km/h to mph
- 315 km/h to mph
- 320 km/h to mph
- 322 km/h to mph
- 330 km/h to mph
- 340 km/h to mph
- 350 km/h to mph
- 400 km/h to mph
- 414 km/h to mph
- 490 km/h to mph
- 496 km/h to mph
- 500 km/h to mph
Frequently asked questions
How do I convert km/h to mph?
Multiply the speed in km/h by 0.621371. For example, 100 km/h × 0.621371 = 62.14 mph. You can also divide by 1.609344, the number of kilometers in a mile.
What is 100 km/h in mph?
100 km/h is 62.14 mph. See the full breakdown on the 100 km/h to mph page.
Are kph, km/h and kmph the same thing?
Yes. km/h is the official symbol for kilometers per hour. “kph” is common in the US and UK, and “kmph” is widely used in India. All three mean exactly the same speed unit.
What does “km to mph” mean?
People often type “km to mph” when they mean km/h to mph — converting a speed. If you need to convert a distance (kilometers to miles), the factor is the same: 1 km = 0.621371 miles.
How can I convert km/h to mph in my head?
Divide by 1.6, or multiply by 5 and divide by 8. 80 km/h ÷ 1.6 = 50 mph; the exact answer is 49.7 mph. For a rougher estimate, take 60% of the number: 100 km/h ≈ 60 mph.
Which is faster, 100 km/h or 100 mph?
100 mph is much faster: it equals 160.9 km/h. 100 km/h is only 62.1 mph.
Last updated: