Kilometer per hour to Mile per hour Converter
Convert kilometers per hour to miles per hour with this free speed converter. The exact relationship used on this page is 1 kilometer per hour = 0.621371192237 miles per hour. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: Mile per hour = Kilometer per hour × 0.621371192237
How to convert kilometers per hour to miles per hour
- Enter the value in kilometers per hour in the converter.
- Read the equivalent amount in miles per hour.
- Use the swap link if you need mile per hour to kilometer per hour instead.
- Check the table for common values without typing.
Worked examples
- 1 km/h = 0.6213711922 mph
- 5 km/h = 3.106855961 mph
- 10 km/h = 6.213711922 mph
- 25 km/h = 15.53427981 mph
Conversion table
Common kilometers per hour values converted to miles per hour.
| km/h | mph |
|---|---|
| 1 | 0.6213711922 |
| 2 | 1.242742384 |
| 3 | 1.864113577 |
| 4 | 2.485484769 |
| 5 | 3.106855961 |
| 6 | 3.728227153 |
| 7 | 4.349598346 |
| 8 | 4.970969538 |
| 9 | 5.59234073 |
| 10 | 6.213711922 |
| 20 | 12.42742384 |
| 50 | 31.06855961 |
| 100 | 62.13711922 |
| 250 | 155.3427981 |
| 500 | 310.6855961 |
| 1,000 | 621.3711922 |
About this conversion
Kilometer per hour (km/h) and Mile per hour (mph) are both speed units. Speed conversion is essential for travel, athletics, aviation, and physics homework. Bookmark this URL when you convert kilometers per hour to miles per hour often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the mile per hour to kilometer per hour converter.
FAQ
How many miles per hour are in 1 kilometer per hour?+
1 kilometer per hour equals 0.621371192237 miles per hour.
What is the formula to convert kilometers per hour to miles per hour?+
Mile per hour = Kilometer per hour × 0.621371192237
How do I convert kilometers per hour to miles per hour by hand?+
Multiply the kilometer per hour value by 0.621371192237. Example: 10 kilometers per hour × 0.621371192237 = 6.21371192237 miles per hour.
Is this km/h to mph converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.