Miles to Kilometers Converter
Convert miles to kilometers instantly with reference table.
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1 mi = 1.609344 km
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 | 1.609344 |
| 2 | 3.218688 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 15 | 24.14016 |
| 20 | 32.18688 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 75 | 120.7008 |
| 100 | 160.9344 |
| 150 | 241.4016 |
| 200 | 321.8688 |
| 250 | 402.336 |
| 500 | 804.672 |
| 1,000 | 1,609.344 |
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How to Convert Miles to Kilometers
Formula: km = miles × 1.60934
For a quick estimate, multiply by 1.6. So 10 miles × 1.6 = 16 km.
| Miles | Kilometers |
|---|---|
| 1 mi | 1.61 km |
| 2 mi | 3.22 km |
| 3 mi | 4.83 km |
| 5 mi | 8.05 km |
| 10 mi | 16.09 km |
| 15 mi | 24.14 km |
| 20 mi | 32.19 km |
| 25 mi | 40.23 km |
| 26.2 mi | 42.16 km |
| 30 mi | 48.28 km |
| 40 mi | 64.37 km |
| 50 mi | 80.47 km |
| 60 mi | 96.56 km |
| 70 mi | 112.65 km |
| 80 mi | 128.75 km |
| 90 mi | 144.84 km |
| 100 mi | 160.93 km |
When You Need This Conversion
Running races: 5K = 3.1 miles, 10K = 6.21 miles, half marathon = 13.1 miles (21.1 km), marathon = 26.2 miles (42.2 km). The 26.2-mile marathon distance is highlighted in the table above.
International driving: Speed limit signs outside the US are in km/h. If you see a 100 km/h sign, that's about 62 mph. GPS devices may display distance in either unit depending on region settings.
For all length conversions, see our Length Converter.
When to use this
You are planning a road trip in Canada and the GPS shows distances in kilometers, but you are used to thinking in miles. Or a running event advertises itself as a 10K and you want to know the distance in miles (6.2 miles). Or you are comparing car odometer readings between a US-spec vehicle and an import. Miles-to-kilometers conversion is one of the most common unit conversions in the world, given that only three countries — the US, Myanmar, and Liberia — still use miles as their primary road distance unit.
The exact conversion factor is 1 mile = 1.609344 kilometers. For everyday use, 1.6 km per mile is close enough. To convert, multiply the number of miles by 1.609. So a 26.2-mile marathon is 42.2 km, and a 60 mph speed limit is about 97 km/h.
Good to know
The Fibonacci sequence gives surprisingly good estimates. Consecutive Fibonacci numbers (1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89...) approximate the miles-to-km conversion because the ratio of consecutive Fibonacci numbers approaches the golden ratio (1.618), which is close to 1.609. So 5 miles is about 8 km, 8 miles is about 13 km, and 13 miles is about 21 km. It is a neat mathematical coincidence that actually works in practice.
Speed limits translate in predictable clusters. 30 mph is 48 km/h, 60 mph is 97 km/h, and 70 mph is 113 km/h. When driving in metric countries, remembering that 100 km/h is about 62 mph gives you a useful anchor.
A nautical mile is different from a statute mile. A nautical mile (used in aviation and maritime) is 1.852 km, while a statute mile (used on roads) is 1.609 km. Do not mix them up — the difference is about 15%.
Quick Reference
| Miles | Kilometers | Common Use |
|---|---|---|
| 0.5 mi | 0.805 km | Short walk |
| 1 mi | 1.609 km | 4-minute mile benchmark |
| 3.1 mi | 5 km | 5K race |
| 5 mi | 8.047 km | Average commute distance |
| 6.2 mi | 10 km | 10K race |
| 10 mi | 16.093 km | Long training run |
| 13.1 mi | 21.097 km | Half marathon |
| 26.2 mi | 42.195 km | Marathon |
| 50 mi | 80.467 km | Ultramarathon |
| 100 mi | 160.934 km | Cross-state drive |
| 500 mi | 804.672 km | Day-trip drive |
| 1000 mi | 1609.344 km | Cross-country flight |