KM to miles●
The same journey, in different units. Convert kilometres to miles in a few keystrokes.
Length
Use a decimal point (2.54), scientific notation (1e3), or feet + inches (5 ft 11 in).
Feet + inches detected. The source unit is set to feet. Swap converts the value to the other unit.
Fractional results are rounded to the nearest 1/16 inch.
Try a value
Pick an example to startThe formula
miles = kilometres ÷ 1.609344
One international mile is exactly 1.609344 kilometres. Divide kilometres by 1.609344 to get miles. The multiplier 0.621371 is a rounded shortcut.
A worked example
For a 5 km route, divide 5 by 1.609344. The distance is approximately 3.106856 miles.
5 ÷ 1.609344 ≈ 3.106856 mi
Quick reference
Reference values are rounded to 6 decimal places. Use the converter above for other values or precision.
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 1.609344 | 1 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 20 | 12.427424 |
| 25 | 15.53428 |
| 50 | 31.06856 |
| 100 | 62.137119 |
| 1,000 | 621.371192 |
All equivalent units
The same value, in every supported unit.
Length conversions
For routes, runs and road distances.
Convert route lengths and other distances between kilometres and international miles. This is a length conversion, not a speed conversion: km/h and mph also include a time unit. This page starts with international miles; choose Nautical miles (nmi) in the unit menu for nautical distances.
Calculation details & precision
Length conversions use metres as the base unit. The international inch is exactly 0.0254 m; a foot is 12 inches, an international mile is 1,609.344 m, and an international nautical mile is 1,852 m.
Automatic displays up to 12 significant digits. Choose 2, 4 or 6 decimal places in Precision for a shorter result. Displayed results are rounded; very large or small values use scientific notation.
Common questions
Is a kilometre longer than a mile?
No. One international mile equals 1.609344 kilometres, so a mile is longer than a kilometre.
Does this convert to nautical miles?
This page starts with international miles, each exactly 1,609.344 metres. To use nautical miles instead, select “Nautical miles (nmi)” in the unit menu. One international nautical mile is exactly 1,852 metres.