Miles to Kilometers
Convert miles to kilometers instantly, with a reference table.
Miles to Kilometers at a glance
Miles to Kilometers is a free online converter you can use right now to convert miles to kilometers instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Miles to Kilometers conversion table
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 mi | 1.609344 km |
| 2 mi | 3.218688 km |
| 3 mi | 4.828032 km |
| 5 mi | 8.04672 km |
| 10 mi | 16.09344 km |
| 25 mi | 40.2336 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
| 500 mi | 804.672 km |
| 1000 mi | 1,609.344 km |
About Miles to Kilometers
Convert miles to kilometers instantly, with a reference table of common values. The factor is exact: 1 mi = 1.609344 km.
Needed when planning travel in a metric country from a mileage figure, or converting a running distance โ most race distances are defined in kilometres even where roads are signed in miles.
The mile comes from the Roman mille passus โ a thousand paces, each pace being two steps. The modern statute mile of 5,280 feet was fixed by an English statute in 1593, which is why the number is so awkward: it was chosen to accommodate the existing furlong rather than for convenience. It is the road-distance unit of the United States and the United Kingdom, which is why British road signs give miles while almost everything else in Britain is metric. A mile is a comfortable 15 to 20 minute walk, and a marathon is 26.2 miles.
Worked through with real numbers: 1 mi is 1.609 km, 10 mi is 16.093 km, 100 mi is 160.934 km.
As for the other side of the conversion: A brisk walk covers about 5 km in an hour, and a marathon is 42.195 km.
Length conversions between metric and imperial are exact by definition rather than approximate. The 1959 international yard and pound agreement fixed the inch at precisely 2.54 cm and the yard at 0.9144 m, so these factors are definitions and carry no measurement error.
How to use Miles to Kilometers
- Enter the number of miles you want to convert.
- The equivalent in kilometers appears instantly โ there is no button to press.
- Check the reference table for common Miles to Kilometers values.
Frequently asked questions
How do I convert miles to kilometers?
Multiply your miles figure by 1.609344 to get kilometers โ or type a value above and read the answer straight off.
How many kilometers are in one mile?
1 mi = 1.609344 km.
When would I need to convert miles to kilometers?
Needed when planning travel in a metric country from a mileage figure, or converting a running distance โ most race distances are defined in kilometres even where roads are signed in miles.
What is a mile, exactly?
The mile comes from the Roman mille passus โ a thousand paces, each pace being two steps. The modern statute mile of 5,280 feet was fixed by an English statute in 1593, which is why the number is so awkward: it was chosen to accommodate the existing furlong rather than for convenience. A mile is a comfortable 15 to 20 minute walk, and a marathon is 26.2 miles.
Where is the kilometer actually used?
It is the standard road-distance unit almost everywhere outside the United States and the United Kingdom, and the standard unit for running and cycling distances internationally. A brisk walk covers about 5 km in an hour, and a marathon is 42.195 km.
Is there anything tricky about length conversions?
Length conversions between metric and imperial are exact by definition rather than approximate. The 1959 international yard and pound agreement fixed the inch at precisely 2.54 cm and the yard at 0.9144 m, so these factors are definitions and carry no measurement error.
Is this converter accurate?
Yes. It uses the exact standard factor of 1 mi = 1.609344 km, and the conversion runs in your browser so nothing is uploaded.