Miles to Kilometers Converter
Convert miles (mi) to kilometers (km) instantly. Perfect for travel, running, and international distance conversions.
Common in US for long distance
1000 meters = 1 km
Quick Conversion Formulas
Common Length Reference Points
Credit Card Width
3.375 inches / 8.57 cm
Average Human Height
5.5-6 feet / 167-183 cm
Football Field
100 yards / 300 feet / 91.4 m
Marathon Distance
26.2 miles / 42.195 km
Conversion History
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Miles to Kilometers Formula
km = miles × 1.60934
How to convert miles to kilometers:
- Take the number of miles
- Multiply by 1.60934 (or approximately 1.6 for quick estimates)
- The result is the distance in kilometers
Example:
Convert 10 miles to km:
km = 10 × 1.60934 = 16.0934 km (or ~16 km)
⚠️ Important Disclaimer
This tool provides estimates for informational purposes only. Results should not be relied upon for important decisions. Always consult with a qualified professional for advice specific to your situation.
Miles to Kilometers Conversion Table
| Miles (mi) | Kilometers (km) | Context |
|---|---|---|
| 1 mi | 1.609 km | Basic conversion |
| 5 mi | 8.047 km | 5K race distance |
| 10 mi | 16.093 km | 10 mile run |
| 26.2 mi | 42.195 km | Marathon distance |
| 50 mi | 80.467 km | Ultramarathon |
| 100 mi | 160.934 km | Long road trip |
| 250 mi | 402.336 km | Cross-state travel |
| 500 mi | 804.672 km | Long distance drive |
| 1,000 mi | 1,609.34 km | Cross-country trip |
Miles vs Kilometers: When to Use Each
Miles (Imperial)
The mile is primarily used in the United States, UK (for roads), and a few other countries. One mile equals 1.60934 kilometers.
Common uses:
- Road distances in the US
- Speed limits (mph)
- Running race distances (in US)
- Air travel distances (nautical miles)
Kilometers (Metric)
The kilometer is the standard unit in most countries worldwide. One kilometer equals 0.621371 miles.
Common uses:
- International road distances
- Speed limits (km/h)
- Olympic running events (5K, 10K)
- Scientific measurements
Frequently Asked Questions
How many kilometers are in 1 mile?
1 mile equals 1.60934 kilometers. For quick estimates, you can use 1.6 km per mile.
How do I quickly convert miles to km in my head?
Multiply the miles by 1.6 for a close approximation. For example, 10 miles × 1.6 = 16 km (actual: 16.09 km). Or use the Fibonacci sequence: 5 mi ≈ 8 km, 8 mi ≈ 13 km, 13 mi ≈ 21 km.
Is a 5K race 5 miles?
No, a 5K race is 5 kilometers, which equals approximately 3.1 miles. A 5-mile race would be about 8 kilometers.
What is a marathon in kilometers?
A marathon is 26.2 miles, which equals 42.195 kilometers. This is the official Olympic marathon distance.