Convert Miles to Kilometers
10 miles is 16.09 km. One mile is exactly 1.609344 kilometers.
10 miles is 16.09344 kilometers, because one mile is 1.609344 kilometers. To convert miles to kilometers, multiply by 1.609344; to go the other way, divide by 1.609344 or multiply by 0.62137119. The factor is exact rather than rounded: it follows from NIST. Exactly 5,280 feet — a survivor of the Roman mille passus, rounded up by an English statute of 1593.
Factor checked against the defining standard · How we check
- Miles × 1.609344
10 * 1.60934416.093 km
10 miles in every length unit
| Unit | Value | Exact factor |
|---|---|---|
| inches | 633,600 in | × 63,360 |
| feet | 52,800 ft | × 5,280 |
| yards | 17,600 yd | × 1,760 |
| miles (as entered) | 10 mi | — |
| millimeters | 16,093,440 mm | × 1,609,344 |
| decimetres | 160,934.4 dm | × 16,093.44 |
| centimeters | 1,609,344 cm | × 160,934.4 |
| meters | 16,093.44 m | × 1,609.344 |
| kilometers | 16.09344 km | × 1.609344 |
| nautical miles | 8.689762419 nmi | × 0.868976241901 |
| micrometers | 16,093,440,000 µm | × 1,609,344,000 |
| nanometers | 16,093,440,000,000 nm | × 1,609,344,000,000 |
| thou | 633,600,000 thou | × 63,360,000 |
Factors are entered by hand from NIST rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: miles to kilometres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert miles to kilometers? The converter and the working
- 1.Take the measurement in miles.
- 2.Multiply by 1.609344 — that is how many kilometers fit in one mile.
- 3.To go back the other way, divide by 1.609344, or multiply by 0.62137119.
Worked example: 25 miles to kilometers
- Formula
- mi × 1.609344 = km
- Arithmetic
- 25 × 1.609344 = 40.23 km
- Answer
- 25 mi = 40.23 km
The factor is exact, so this figure is exact too — only the display is rounded.
Miles to kilometers conversion table
| Miles | Kilometers |
|---|---|
| 1 mi | 1.61 km |
| 2 mi | 3.22 km |
| 3 mi | 4.83 km |
| 4 mi | 6.44 km |
| 5 mi | 8.05 km |
| 6 mi | 9.66 km |
| 7 mi | 11.27 km |
| 8 mi | 12.87 km |
| 9 mi | 14.48 km |
| 10 mi | 16.09 km |
| 12 mi | 19.31 km |
| 15 mi | 24.14 km |
| 20 mi | 32.19 km |
| 25 mi | 40.23 km |
| 50 mi | 80.47 km |
| 100 mi | 160.93 km |
| 200 mi | 321.87 km |
| 300 mi | 482.8 km |
| 500 mi | 804.67 km |
| 1000 mi | 1,609.34 km |
| 2000 mi | 3,218.69 km |
| 5000 mi | 8,046.72 km |
| 10000 mi | 16,093.44 km |
A nautical mile is a different mile
The statute mile on this page is exactly 1.609344 km. The nautical mile, used in air and sea navigation, is exactly 1,852 m — fifteen per cent longer — and it was defined as one minute of arc along a meridian. A speed in knots is nautical miles per hour, so 30 knots is 34.5 mph rather than 30.
NIST Handbook 44, Appendix C — general tables of units of measurement
What is a mile?
Exactly 5,280 feet — a survivor of the Roman mille passus, rounded up by an English statute of 1593.
What is a kilometer?
One thousand meters, and about 0.621 miles.
How many kilometers are in a mile?
One mile is 1.609344 kilometers, exactly. Going the other way, one kilometer is 0.62137119 miles. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every length unit here
The whole group — 13 units with their symbols and the size of each one in meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a mile.
Source: NIST — international yard and pound agreement (inch = 25.4 mm exactly)
Cite this page
- APA
- Rule Calculator. (2026). Convert Miles to kilometers. Rule Calculator. https://rulecalculators.com/convert/mile-to-kilometer
- MLA
- "Convert Miles to kilometers." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/mile-to-kilometer.
- Chicago
- Rule Calculator. "Convert Miles to kilometers." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/mile-to-kilometer.
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Questions people actually ask
- How many kilometers are in a mile?
- 1.609344. One thousand meters, and about 0.621 miles.
- How do I convert kilometers back to miles?
- Divide by 1.609344, or multiply by 0.62137119 — they are the same operation.
The values people look up
Each one is this page with the value filled in, and each answers in its own title.
Other length conversions
Kilometers to miles — the same conversion the other way.