Kilometers to Miles Converter
A kilometer is 0.621371 miles. Race distances, foreign road signs and every car odometer outside the US arrive in kilometers.
How the math works
miles = kilometers / 1.609344. The factor is exact, because a mile is 63,360 inches and an inch is exactly 25.4 millimeters. The same division converts a speed: km/h to mph is the identical sum.
Common questions
- How many miles is a 5K?
- 3.107 miles. A 10K is 6.214 miles, a half marathon is 13.109 miles and a full marathon is 26.219 miles. The mile figures are never round because the distances were set in kilometers.
- How do I convert km/h to mph in my head?
- Take off a third, then add a little back. 100 km/h is about 62 mph, 80 is about 50, and 50 is about 31. The pairing worth memorizing is 100 km/h and 60 mph, which are close enough that mistaking one for the other is a speeding ticket rather than a crash.
- Is 5 km a long way to walk?
- About 3.1 miles, or roughly an hour at a normal walking pace. It is the standard charity walk and park run distance for exactly that reason: far enough to be an effort, short enough that anybody can finish it.
- Why do some countries use kilometers?
- Almost all of them do. The US, Liberia and Myanmar are the only countries that have not moved road signs to metric, which is why this conversion is needed far more often going into miles than out of them.
People also work out
More unit conversion calculators
- Length Converter
- Weight Converter
- Volume Converter
- Area Converter
- Speed Converter
- Temperature Converter
- Feet to Inches Converter
- Inches to Feet Converter
- Feet to Meters Converter
- Miles to Kilometers Converter
- Pounds to Kilograms Converter
- Ounces to Grams Converter
- Gallons to Liters Converter
- Fahrenheit to Celsius Converter