Kilometers to Miles Converter
Convert kilometers to miles. The formula used here is 1 kilometer = 0.621371192237 miles. The formula is mi = km × 0.621371192237; 1 km is 0.621371 mi.
A metric length unit equal to 1,000 meters, commonly used for travel distances.
A US customary and imperial length unit used for road and travel distances.
Start with your value in kilometers, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
When the converted length drives a cut, fit, clearance, or route estimate, decide whether to round to the nearest mark, round up for safety, or keep decimals for documentation.
Many length factors are exact by definition, but practical measurements still depend on rulers, survey tools, tolerances, and how the result will be used. This page displays converted values with up to 6 decimal places by default.
| Kilometers | Miles |
|---|---|
| 1 km | 0.621371 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.213712 mi |
| 42.195 km | 26.218757 mi |
| 100 km | 62.137119 mi |
Useful for checking construction and DIY measurements. Use the same formula with your exact input if the measurement needs to be documented.
Useful for travel, mapping, or athletics distances. Use the same formula with your exact input if the measurement needs to be documented.
Useful for product dimensions and classroom conversions. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert kilometers to miles?
Enter the value in kilometers and apply mi = km × 0.621371192237. Round the miles result after the conversion, not before.
What is 1 kilometer in miles?
1 km equals 0.621371 mi with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is 5 km in mi?
5 km is 3.106856 mi. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert miles back to kilometers?
Yes. Use the reverse Miles to Kilometers converter if you need to go the other direction.
How accurate is this kilometers to miles conversion?
The calculator runs the formula in your browser and rounds results to 6 decimal places by default. Many length factors are exact by definition, but practical measurements still depend on rulers, survey tools, tolerances, and how the result will be used.