📏 Miles to Kilometers Converter
Convert miles (mi) to kilometers (km) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 mile (mi) = 1.609344 kilometers (km). Formula: km = mi × 1.609344.
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Miles to Kilometers Converter inputs
Result
Miles to Kilometers conversion table
| Miles (mi) | Kilometers (km) |
|---|---|
| 0.1 mi | 0.1609344 km |
| 0.5 mi | 0.804672 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 |
| 20 mi | 32.18688 km |
| 25 mi | 40.2336 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
| 1,000 mi | 1,609.344 km |
Other length conversions
mi to mmmi to cmmi to mmi to kmmi to inmi to ftmi to ydmi to nmi
How to convert miles to kilometers
Multiply the number of miles by 1.609344 to get kilometers: km = mi × 1.609344.
Example: 5 mi = 8.04672 km.
The mile (mi) and the kilometer (km) are both units of length. Need the opposite direction? Use the km to mi converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many kilometers are in a mile?
1 mile = 1.609344 kilometers.
How do I convert miles to kilometers?
Use the formula km = mi × 1.609344. For example, 5 mi = 8.04672 km.
How do I convert kilometers back to miles?
1 kilometer = 0.62137119 miles. Use the km to mi converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.