How many miles is 1 kilometer?

One kilometer is 0.621371 miles. For a quick estimate, multiply kilometers by five and divide by eight, which is accurate to within 0.6 per cent at any distance.

Do I need to install anything?

No. Every calculator runs in the browser you are already using. There is no app, no account and no sign-up, and the figures you type are never sent to a server.

Which fuel economy unit should I use?

Use whichever your country quotes, but litres per 100 km is the most useful for comparing cars, because equal changes in it represent equal changes in fuel used. Equal changes in MPG do not.

Convert a distance, or work out what fuel will cost

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All calculators

Kilometers to milesConvert any distance in km, plus a reference table of common values. Miles to kilometersThe other direction, with the exact conversion factor explained. Mileage calculatorDistance driven and fuel used, in whatever units you have. MPG and km/L converterCompare specs across US MPG, imperial MPG, km/L and L/100km. Fuel cost and trip plannerHow much fuel a journey needs and what it will cost. Speed: km/h and mphConvert a speed limit either way, with a chart of common limits. Litres and gallonsLitres, US gallons and imperial gallons, all three at once.

Common conversions

Common kilometer to mile conversions.
Kilometers	Miles
1 km	0.62137
5 km	3.10686
10 km	6.21371
20 km	12.42742
50 km	31.06856
100 km	62.13712

The two numbers worth remembering

Every distance conversion on this site comes from one exact definition: the international mile has been fixed at 1,609.344 metres since 1959, which makes both directions simple multiplication.

miles = kilometers × 0.621371
kilometers = miles × 1.609344

For rough mental arithmetic, kilometers to miles is close to multiplying by 0.6, and miles to kilometers is close to adding half again. A 100 km drive is a bit over 60 miles; a 60 mile drive is a bit under 100 km.

Watch out for the two gallons

A US gallon is 3.785 litres and an imperial gallon is 4.546 litres, so the same car looks about 20% more efficient when its economy is quoted in imperial MPG. If you are comparing a British review with an American one, check which gallon each is using before you conclude anything. The fuel economy converter shows both at once.

Next steps

Common questions

How many miles is 1 kilometer?: One kilometer is 0.621371 miles. For a quick estimate, multiply kilometers by five and divide by eight, which is accurate to within 0.6 per cent at any distance.
Do I need to install anything?: No. Every calculator runs in the browser you are already using. There is no app, no account and no sign-up, and the figures you type are never sent to a server.
Which fuel economy unit should I use?: Use whichever your country quotes, but litres per 100 km is the most useful for comparing cars, because equal changes in it represent equal changes in fuel used. Equal changes in MPG do not.