This converter turns kilometers into miles instantly, using the exact factor 1 kilometer = 0.6213711922 miles. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One thousand metres — the standard road-distance unit almost everywhere outside the US and UK. The statute mile: 5,280 feet, used for road distance in the US, UK and a handful of others.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
kilometers- The amount you are converting, measured in kilometers
0.6213711922- The exact number of miles in one kilometer
miles- The converted result
How it works, step by step
- Enter the number of kilometers you want to convert.
- The value is multiplied by 0.6213711922, the exact conversion factor.
- The result is displayed in miles, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 kilometers
Multiply 5 by 0.62137119. That gives 3.1069 miles. A quick sanity check: one kilometer is smaller than one mile, so the number should get smaller — and it does.
Converting 72 kilometers
72 × 0.62137119 = 44.7387 miles. Working backwards, 44.7387 ÷ 0.62137119 returns 72 kilometers, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many miles are in one kilometer?
Exactly 0.6213711922. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert kilometers to miles?
Miles = kilometers × 0.6213711922. To reverse it, divide instead: kilometers = miles ÷ 0.6213711922, which is the same as multiplying by 1.609344.
Is the kilometer bigger than the mile?
No. One kilometer is only 0.621371 of a mile, so the mile is the larger unit.
Why does my answer differ slightly from other km to miles converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a kilometer?
One thousand metres — the standard road-distance unit almost everywhere outside the US and UK.
What is a mile?
The statute mile: 5,280 feet, used for road distance in the US, UK and a handful of others.
Kilometers to miles reference table
| Kilometers | Miles |
|---|---|
| 0.5 km | 0.310686 mi |
| 1 km | 0.621371 mi |
| 2 km | 1.2427 mi |
| 3 km | 1.8641 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 15 km | 9.3206 mi |
| 20 km | 12.4274 mi |
| 25 km | 15.5343 mi |
| 50 km | 31.0686 mi |
| 75 km | 46.6028 mi |
| 100 km | 62.1371 mi |
| 250 km | 155.3428 mi |
| 500 km | 310.6856 mi |
| 1000 km | 621.3712 mi |
Exact factor: 1 kilometer = 0.6213711922 miles. Values rounded for display.