How to use the km to miles converter
- 1Type a distance in kilometers or miles. The other box updates instantly.
- 2Use the speed section to convert km/h and mph.
- 3Check the speed-sign row for common limits when driving abroad.
- 4Open Common distances for race and road-trip distances.
The conversion
One mile is exactly 1.609344 kilometers, by international agreement. So:
- miles = kilometers ÷ 1.609344
- kilometers = miles × 1.609344
100 km is about 62.14 miles, and 60 miles is about 96.56 km.
Quick mental maths
Multiply kilometers by 0.6 for a close estimate of miles (100 km ≈ 60 miles), or multiply miles by 1.6 for kilometers. For a slightly closer answer, use the Fibonacci trick: 5 miles ≈ 8 km, 8 miles ≈ 13 km.
Driving abroad
Most of the world uses km/h on speed signs, while the US and UK use mph. A sign showing 100 means about 62 mph, and 50 in a town is about 31 mph. Rental cars usually show both scales on the speedometer, with km/h as the larger numbers outside the US and UK.
Frequently asked questions
How many miles is 1 km?
1 kilometer is about 0.6214 miles.
How many km is 1 mile?
1 mile is exactly 1.609344 kilometers.
Is 100 km/h fast?
100 km/h is about 62 mph, a common limit on rural roads and some highways outside the US.
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