km to miles converter
This km to miles converter turns kilometers into miles and miles into kilometers as you type, for a race distance, a road trip abroad or a training run logged in the other unit.
Formula: mi = km ÷ 1.609344 10 ÷ 1.609344 = 6.21371192
In every unit (30)
- Nanometer1 × 10¹³ nm
- Micrometer10,000,000,000 μm
- Millimeter10,000,000 mm
- Centimeter1,000,000 cm
- Decimeter100,000 dm
- Meter10,000 m
- Decameter1,000 dam
- Hectometer100 hm
- Arpent171.02787754 arp
- Inches393,700.787402 in
- Inches (fraction)393,700 13/16 in (Fraction)
- Feet32,808.3989501 ft
- Feet + Inch32,808 ft 4.8 in
- Yards10,936.1329834 yd
- Miles6.21371192 mi
- Fathoms INTL5,468.06649169 fm
- Nautical mile5.39956803 nmi
- Furlong49.70969538 fur
- Chain497.09695379 ch
- Pole1,988.38781516 p
- Light year1.057 × 10⁻¹² ly
- Parsec3.2408 × 10⁻¹³ pc
- Krabiat1,920,122.88786 Krabiat
- Nio480.07681229 Nio
- Khuep40,000 Kh
- Sok20,000 Sok
- Wa5,000 Wa
- Sen250 Sen
- Yot0.625 Yot
- Ångström1 × 10¹⁴ Å
How to use the km to miles converter
Type a distance in kilometers and read the miles beside it. The round button swaps the units to convert miles to km, and the list below gives the same distance in meters, yards and nautical miles. A sum such as 3×13.1 works too, handy to add up stages.
A statute mile is exactly 1.609344 kilometers, or 5,280 feet, a value fixed in 1959 (NIST). To convert kilometers to miles you divide by 1.609344. The km to miles converter applies that exact factor and only rounds for display.
Common values
| km | mi |
|---|---|
| 1 | 0.6214 |
| 2 | 1.2427 |
| 3 | 1.8641 |
| 5 | 3.1069 |
| 8 | 4.971 |
| 10 | 6.2137 |
| 15 | 9.3206 |
| 20 | 12.4274 |
| 21.0975 | 13.1094 |
| 25 | 15.5343 |
| 30 | 18.6411 |
| 42.195 | 26.2188 |
| 50 | 31.0686 |
| 80 | 49.7097 |
| 100 | 62.1371 |
| 160 | 99.4194 |
Races, roads and speed
Running distances are where this comes up most. A 5K is 3.1 miles, a 10K is 6.2 miles, a half marathon is 13.1 miles and a marathon is 26.2 miles, or 42.195 km. Type your race in the km to miles converter to plan splits in the unit your watch uses.
Road signs in Canada, Mexico and Europe are in kilometers, and speed limits in km/h: 100 km/h is about 62 mph. For speeds, the Speed category of the conversion calculator converts km/h to mph and even gives your pace in minutes per kilometer.
Mental shortcut: the Fibonacci numbers come close. 5 miles is about 8 km, 8 miles about 13 km, 13 miles about 21 km. Mind the nautical mile used at sea and in the air, which is 1,852 meters: it has its own line in the list.