Length conversion
4 mi to km
6.437 km
4 miles = 6.437 kilometres. Exact factor: km = mi × 1.609344.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
km = mi × 1.609344
Worked example: 4 × 1.609344 = 6.437 km.
Values near 4 mi
| mi | km |
|---|---|
| 3.25 | 5.23 |
| 3.5 | 5.633 |
| 3.75 | 6.035 |
| 4this page | 6.437 |
| 4.25 | 6.84 |
| 4.5 | 7.242 |
| 4.75 | 7.644 |
Frequently asked
How do you convert miles to kilometres?
Apply the formula km = mi × 1.609344. Enter any value in the live converter above and the result updates as you type.
What is 4 mi in km?
4 mi equals 6.437 km. The reference table below shows the values immediately around 4 mi.
Is this conversion exact?
Yes. The statute mile is exactly 1.609344 km. A nautical mile is different again, at 1.852 km exactly.