KM to Miles Converter
Convert kilometres to miles in your browser, with a full reference table and the formula behind it. Free, instant, no sign-up.
How to convert kilometres to miles
miles = kilometres × 0.621371
One kilometre is 0.621371 miles, so any conversion is a single multiplication. To go the other way, divide by 0.621371 instead. The converter above is already set to kilometres and miles, so you can type any value and read the answer straight away.
KM to Miles conversion table
Common values, worked out in advance:
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 2 km | 1.2427 mi |
| 3 km | 1.8641 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 15 km | 9.3206 mi |
| 20 km | 12.4274 mi |
| 25 km | 15.5343 mi |
| 30 km | 18.6411 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
The quick mental version
For a rough answer without a calculator, remember that 1 mi is about 1.6093 km. That is usually close enough for shopping, travel and DIY, and the converter above gives you the exact figure when it matters.
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Frequently asked questions
How many miles are in 1 km?
One km is 0.621371 mi. The table above covers the values people look up most often.
What is the formula to convert kilometres to miles?
miles = kilometres × 0.621371. One kilometre is 0.621371 miles, so any conversion is a single multiplication. To go the other way, divide by 0.621371 instead.
Is this km to miles converter accurate?
Yes. It uses the exact internationally defined conversion factors and calculates in your browser, so nothing is rounded until the result is displayed.
Can I convert miles back to kilometres here?
Yes. Use the swap button in the converter to reverse the direction, or pick any other pair of units from the two dropdowns.