Length conversion
1 km to mi
0.621 mi
1 kilometres = 0.621 miles. Exact factor: mi = km ÷ 1.609344.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
mi = km ÷ 1.609344
Worked example: 1 × 0.6213711922 = 0.621 mi.
Values near 1 km
| km | mi |
|---|---|
| 0.25 | 0.155 |
| 0.5 | 0.311 |
| 0.75 | 0.466 |
| 1this page | 0.621 |
| 1.25 | 0.777 |
| 1.5 | 0.932 |
| 1.75 | 1.087 |
Frequently asked
How do you convert kilometres to miles?
Apply the formula mi = km ÷ 1.609344. Enter any value in the live converter above and the result updates as you type.
What is 1 km in mi?
1 km equals 0.621 mi. The reference table below shows the values immediately around 1 km.
Is this conversion exact?
Yes. Consecutive Fibonacci numbers approximate this ratio: 5 km is about 3 miles, 8 km about 5, 13 km about 8.