About the Miles to KM Converter
What is the Miles to KM Converter?
This miles to km converter uses the exact definition of the international mile: 1,609.344 metres.
Switch the units to convert kilometres to miles.
How to use the Miles to KM Converter
- Value (sample: 1)
- From (sample: Mile (mi))
- To (sample: Kilometre (km))
- Press Convert (results also refresh as you type). The result card shows the Converted Value, along with Result, Conversion factor and Reverse factor.
Formula used
km = miles × 1.609344; miles = km × 0.621371
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Value | 1 |
| From | Mile (mi) |
| To | Kilometre (km) |
| Result | Value |
|---|---|
| Converted Value | 1.609344 km |
| Result | 1 mi = 1.60934 km |
| Conversion factor | 1 mi = 1.609344 km |
| Reverse factor | 1 km = 0.62137119 mi |
Tips for using the Miles to KM Converter
- Quick estimate: miles × 1.6 = km, or km × 0.6 = miles.
- A marathon is 42.195 km, or 26.2 miles.