Kilometers to Miles (km to mi) Converter

1 kilometer equals 0.62137119 miles — multiply the number of kilometers by 0.62137119 to convert to miles. This is the classic metric-to-imperial distance conversion between kilometers and the statute mile used in the US and UK.

The formula

To convert kilometers to miles, multiply by 0.62137119:

miles = kilometers × 0.62137119

For example, 10 km × 0.62137119 = 6.213712 mi. The reverse factor is 1 mi = 1.609344 km.

Conversion table

How to convert online

1. Type the number of kilometers into the first box.
2. Read the equivalent miles instantly in the second box.
3. Or enter a mile value to convert back to kilometers — it works both ways.

Use the Kilometer to Mile Converter — free and instant in your browser.

Where this conversion is used

Kilometers-to-miles is a daily conversion for travellers, drivers and runners moving between metric and imperial countries. It turns a car's km/h speed or road-sign distance into miles, converts a 10 km race to 6.21 miles, and helps compare fitness-app distances against US mile markers.

FAQ

How many miles are in a kilometer?

0.62137119 miles. So 5 km = 3.106856 mi and a marathon (42.195 km) ≈ 26.22 mi.

What is the formula to convert kilometers to miles?

mi = km × 0.62137119. A quick estimate is to multiply km by about 0.62.

How do I convert miles back to kilometers?

Divide by 0.62137119, or multiply by 1.609344. For example, 26.2 mi ≈ 42.16 km.

Is the conversion exact?

The mile equals exactly 1.609344 km, so 0.62137119 is that value inverted — accurate to eight decimals.

Related converters

• Mile to Kilometer Converter
• Kilometer to Meter Converter
• Kilometer to Foot Converter
• Kilometer to Centimeter Converter

Built by ByteVancer

ByteTools is a free product of ByteVancer, a software and web development studio. Need custom web tools or calculators? ByteVancer builds fast, privacy-first software.