km/h to mph Converter
Convert km/h to mph instantly — 1 km/h = 0.621371 mph, with every other speed unit, a conversion chart, and a list mode for many values.
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- Works offline after first load
Formula: mph = km/h × 0.621371
| km/h | mph |
|---|---|
| 1 km/h | 0.62137 mph |
| 2 km/h | 1.24274 mph |
| 5 km/h | 3.10686 mph |
| 10 km/h | 6.21371 mph |
| 20 km/h | 12.42742 mph |
| 50 km/h | 31.06855 mph |
| 100 km/h | 62.1371 mph |
How to convert km/h to mph
- Type the number of km/h.
- Read the result in mph — and in every other unit below it.
- Swap, change the precision, convert a whole list or copy and share the result.
About km/h to mph Converter
Convert km/h to mph as you type. The result appears instantly with the exact formula, and the same value is shown in every other unit of the category at once — so one page answers all related questions.
A conversion chart lists common values, “Convert a list” handles a whole column of numbers, and you can choose the number of decimals or scientific notation. Swap the units with one click, share a link to your conversion, or print it.
Good for
- Everyday conversions for travel, shopping and recipes
- School and science homework
- Work with specifications and measurements
Tip: Type an expression like a whole column of values in “Convert a list” to convert them all at once.
Frequently asked questions
How do I convert km/h to mph?
Use mph = km/h × 0.621371. For example, 10 km/h = 6.21371 mph.
Can I convert many values at once?
Yes — choose “Convert a list”, paste one value per line (a spreadsheet column works) and copy all the results.
Can I convert to other units too?
Yes. Pick any units in the From and To lists, or switch the category — length, weight, temperature, volume, area, speed, data and more.
What are some common km/h to mph values?
Rounded to 3 decimal places: 50 km/h = 31.069 mph, 80 km/h = 49.71 mph, 100 km/h = 62.137 mph and 120 km/h = 74.565 mph.
Which countries use mph?
The UK and the US post speed limits in miles per hour; most other countries use km/h. A 60 mph limit is about 97 km/h.