Convert km to miles

1 km = 0.6214 mile

To convert km to miles, divide by 1.609344 or multiply by 0.621371192: miles = km × 0.621371. Example: 100 km × 0.621371 = 62.14 miles.

The converter answers as you type, to six significant digits: 42.195 km = 26.2188 mi. The ⇄ button swaps the units if you start from a distance in miles.

km to miles conversion chart

Speed signs, running pace, driving abroad

Speed limits in km/h

The factor works for km/h too. The limits you meet in most of Europe read 50 km/h = 31.07 mph, 90 km/h = 55.92 mph, 110 km/h = 68.35 mph and 130 km/h = 80.78 mph. So 130 on a French motorway is faster than the 70 mph allowed on a British one.

Running pace: min/km to min/mile

Here you multiply, because a mile is longer: pace per mile = pace per km × 1.609. At 5:00 per km, 5 × 1.609344 = 8.047 minutes, and 0.047 × 60 = 2.8 seconds, so 8:03 per mile. Turn seconds into decimals first: 5:30 is 5.5 minutes, which gives 8.851 minutes, or 8:51 per mile.

Driving in a metric country

In Canada, Ireland, Australia or mainland Europe, signs give distances in kilometers and short ones in meters. A sign reading 200 km means 124.27 miles to go. If your rental car shows km/h only, keep the four speeds above in mind.

Doing it in your head

Divide by 8, then multiply by 5. For 80 km: 80 ÷ 8 = 10, then 10 × 5 = 50 miles, against an exact 49.71. That is 0.6% high. Faster still, multiplying by 0.6 comes out 3.4% low: 100 km becomes 60 miles instead of 62.14.

Frequently asked questions

How many miles is a 5K? A 10K?

A 5K is 3.11 miles and a 10K is 6.21 miles (6.21371 before rounding).

Why is a marathon 42.195 km?

Because the distance was set in imperial units: 26 miles 385 yards. The sum is 26 × 1,609.344 m + 385 × 0.9144 m = 42,194.99 m.

What is 100 km/h in mph?

62.14 mph. The other way round, 100 mph is 160.93 km/h.