Kilometers to Miles Converter
Convert kilometers to miles instantly. 1 km equals 0.621371 mi. Use the converter above, or the formula, worked example and table below for common distances.
Live formula: 1 km → mi
See all Length & Distance Converter conversions →
How to Use the Kilometers to Miles Converter
- 1. Enter a value in the left input field — the converter is already set to Kilometer (km) to Mile (mi).
- 2. Read the instant converted value and review the live formula line.
- 3. Use the swap button to reverse the direction, or copy either amount.
- 4. Check the table below for common km to miles conversions.
Kilometers to Miles Converter Formula
miles = kilometers ÷ 1.609344
Worked example: 42.2 km ÷ 1.609344 = 26.2219 mi
Kilometer (km) to Mile (mi) Conversion Table
| From Unit | To Unit | Input | Result |
|---|---|---|---|
| Kilometer (km) | Mile (mi) | 1 | 0.621371 |
| Kilometer (km) | Mile (mi) | 5 | 3.106856 |
| Kilometer (km) | Mile (mi) | 10 | 6.213712 |
| Kilometer (km) | Mile (mi) | 21.1 | 13.110932 |
| Kilometer (km) | Mile (mi) | 42.2 | 26.221864 |
| Kilometer (km) | Mile (mi) | 50 | 31.06856 |
| Kilometer (km) | Mile (mi) | 100 | 62.137119 |
| Kilometer (km) | Mile (mi) | 200 | 124.274238 |
Did You Know?
- The international mile is exactly 1,609.344 meters.
- Road distances in most of the world are posted in kilometers; the US and UK still use miles.
Frequently Asked Questions
How many miles is 1 km?
1 kilometer equals 0.621371 miles.
How do I convert km to miles mentally?
Multiply the kilometers by 0.62 for a quick estimate. For the exact value, divide by 1.609344 — for example, 100 km × 0.62 ≈ 62 miles.
What is 100 km in miles?
100 km equals 62.14 miles (100 ÷ 1.609344 = 62.1371 mi).
What speed is 100 km/h in mph?
100 km/h equals 62.14 mph — speeds use the same 0.621371 factor as distances.