Kilometers to Miles Converter (km to mi)
Convert kilometers to miles instantly with our free km to mi calculator. Enter a value to see the result.
How to convert kilometers to miles
To change km into mi, use this formula:
Quick mental estimate: multiply by about 0.62.
Example: to convert 25 km to mi, calculate 15.5343 mi. To go the other way, use km = mi ÷ 0.621371.
Popular kilometers to miles conversions
- 1 km to mi = 0.621371 mi
- 2 km to mi = 1.24274 mi
- 3 km to mi = 1.86411 mi
- 5 km to mi = 3.10686 mi
- 10 km to mi = 6.21371 mi
- 15 km to mi = 9.32057 mi
- 20 km to mi = 12.4274 mi
- 25 km to mi = 15.5343 mi
- 30 km to mi = 18.6411 mi
- 40 km to mi = 24.8548 mi
- 50 km to mi = 31.0686 mi
- 60 km to mi = 37.2823 mi
- 70 km to mi = 43.496 mi
- 80 km to mi = 49.7097 mi
- 90 km to mi = 55.9234 mi
- 100 km to mi = 62.1371 mi
Kilometers to Miles conversion chart
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 2 km | 1.24274 mi |
| 5 km | 3.10686 mi |
| 10 km | 6.21371 mi |
| 20 km | 12.4274 mi |
| 25 km | 15.5343 mi |
| 50 km | 31.0686 mi |
| 75 km | 46.6028 mi |
| 100 km | 62.1371 mi |
| 250 km | 155.343 mi |
| 500 km | 310.686 mi |
| 1,000 km | 621.371 mi |
When do you need km to mi conversion?
This conversion is commonly used for travel, construction, DIY projects, sewing, sports and school homework. Different countries and industries use different units, so converting kilometers to miles helps you compare measurements accurately.
Frequently asked questions
How many miles are in 1 kilometers?
1 km equals 0.621371 mi.
How do I convert kilometers to miles?
Use the formula mi = km × 0.621371. For example, 25 km = 15.5343 mi.
What is 10 km in mi?
10 km = 6.21371 mi.
What is 100 km in mi?
100 km = 62.1371 mi.
How do I convert mi back to km?
Use km = mi ÷ 0.621371. You can also use our Miles to Kilometers converter.
Is this km to mi converter accurate?
Yes. It uses standard international conversion factors and shows up to 6 significant digits.