Miles and Kilometers Converter
Convert miles to kilometers or kilometers to miles using the standard conversion factor.
Inputs
Result
Enter values on the left and select Calculate to see the result here.
What the Miles and Kilometers Converter does
- Converts miles (mi) to kilometres/kilometers (km) and kilometers to miles using a standard conversion factor.
- Useful for travel, running, driving, maps, route notes, and everyday distance planning.
- Returns a rounded result based on the value and direction you select.
How to use the Miles and Kilometers Converter
- Enter the distance value you want to convert.
- Choose Miles → Kilometers or Kilometers → Miles.
- Click Calculate and allow for small rounding differences when comparing with maps or other tools.
Formula / methodology used
- Conversion factor: 1 mile = 1.609344 kilometers.
- For miles to kilometers, multiply miles by 1.609344.
- For kilometers to miles, divide kilometers by 1.609344. Results are formatted to 4 decimal places.
Example calculation
Convert 10 kilometers to miles.
- Value = 10
- Direction = Kilometers → Miles
- 10 ÷ 1.609344 = 6.2137119
Result: The converted value is approximately 6.2137 miles after display rounding.
Common mistakes and limitations
- Rounding may cause small differences compared with tools that show more decimal places.
- The calculator does not validate routes, map distances, speed limits, legal distances, aviation distances, or engineering tolerances.
- Check that you selected the correct direction before using the result.
Important note
This miles and kilometers converter provides general distance conversions based on your inputs. It is not official navigation, transport, legal, aviation, surveying, or engineering advice.
Miles and Kilometers Converter FAQs
Is this the same as nautical miles?
No. This converter uses statute miles. Nautical miles use a different conversion factor.
Why can a map or race app show a slightly different distance?
This tool only converts the number you enter. Apps may calculate routes, GPS traces, elevation, map matching, or extra decimals differently.
Can I use this for official navigation or engineering work?
Use caution. It should not replace official navigation, transport, legal, aviation, surveying, or engineering measurements.