Miles ↔ Kilometers
Convert between miles and kilometers
Miles ↔ Kilometers
Quick Facts
- •1 mile = 1.609 km
- •1 km = 0.621 miles
- •Marathon = 42.195 km = 26.219 mi
Miles vs Kilometers
A mile is 1.60934 kilometers. Miles are used in the US, UK (for road distances), and a few other countries. Kilometers are used by most of the world. Understanding this conversion is crucial for driving abroad, marathon training, and interpreting international news.
Common Distances
A 5K race is 3.1 miles, a 10K is 6.2 miles, a half marathon is 13.1 miles (21.1 km), and a full marathon is 26.2 miles (42.2 km). Speed limits of 60 mph equal approximately 97 km/h.
How to convert Miles to Kilometers
To convert miles to kilometers, multiply the number of miles by the conversion factor. The exact factor is 1.60934.
Formula
Kilometers = Miles × 1.60934
Worked example
Convert 10 mi to km: 10 mi = 16.0934 km.
Miles to Kilometers reference table
Use this quick lookup for common miles to kilometers values.
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 20 mi | 32.1868 km |
| 25 mi | 40.2335 km |
| 50 mi | 80.467 km |
| 75 mi | 120.7005 km |
| 100 mi | 160.934 km |
| 250 mi | 402.335 km |
Frequently asked questions
What is the formula to convert Miles to Kilometers?
Multiply the number of miles by 1.60934 to get kilometers. For example, 10 mi equals 16.0934 km.
How many kilometers are in 1 mile?
1 mi equals 1.6093 km.
How do I convert kilometers back to miles?
Reverse the formula: Miles = Kilometers ÷ 1.60934. For example, 100 km equals 62.1373 mi.
Is this Miles to Kilometers converter accurate?
Yes. Conversions use the internationally accepted ratio for miles and kilometers and are calculated to 4 decimal places in your browser.
What is 10 mi in km?
10 mi equals 16.0934 km.
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This calculator is for educational and reference purposes only. Always verify critical calculations independently.