Miles to Kilometers Converter
Convert miles to kilometers (km) instantly. Free online distance converter with conversion table and formula.
Why Convert Distance from Miles to Kilometers?
The kilometer (km) is the standard unit of distance used in most countries worldwide. While the United States and United Kingdom use miles, the rest of the world uses kilometers. Converting miles to kilometers is essential for international travel, understanding global maps, and communicating distances with people from metric-using countries.
This conversion is commonly needed for road trips abroad, marathon and race distances, geographic measurements, and understanding international shipping distances.
What is a Mile?
The mile (mi) is a unit of length in the imperial and US customary systems. It is primarily used in the United States and United Kingdom for measuring road distances.
- One mile equals 1.609344 kilometers
- One mile equals 1,609.344 meters
- One mile equals 5,280 feet
- One mile equals 1,760 yards
What is a Kilometer?
The kilometer (km) is a unit of length in the International System of Units (SI). It is the standard unit for measuring road distances in most countries.
- One kilometer equals 1,000 meters
- One kilometer equals 0.621371 miles
- One kilometer equals 3,280.84 feet
- Standard unit for road signs and maps globally
Miles to Kilometers Conversion Formula
To convert miles to kilometers, use the following formula:
Conversion Table: Miles to Kilometers
Here is a quick reference table for common distance conversions:
| Miles (mi) | Kilometers (km) | Common Reference |
|---|---|---|
| 0.5 mi | 0.80 km | Half mile |
| 1 mi | 1.61 km | One mile |
| 3.1 mi | 4.99 km | 5K race |
| 5 mi | 8.05 km | Short commute |
| 6.2 mi | 9.98 km | 10K race |
| 10 mi | 16.09 km | Medium distance |
| 13.1 mi | 21.08 km | Half marathon |
| 26.2 mi | 42.16 km | Full marathon |
| 50 mi | 80.47 km | Long road trip segment |
| 100 mi | 160.93 km | Century ride/drive |
| 500 mi | 804.67 km | Cross-country segment |
| 1000 mi | 1,609.34 km | Long-distance travel |
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Convert miles to kilometers instantly. To do it by hand, multiply the miles by 1.60934 — so 10 miles = 16.09 km. Miles are an imperial/US unit of distance; kilometers are the metric standard, with 1 mile equal to exactly 1.609344 km.
How do I convert miles to km?
- Enter the distance in miles.
- The result in kilometers appears automatically.
- Useful for travel, running, and maps.
What is the miles to km formula?
kilometers = miles × 1.60934
Quick estimate: add about 60% to the miles value (10 miles → 16 km).
Quick reference
| Miles | Kilometers |
|---|---|
| 1 mi | 1.61 km |
| 5 mi | 8.05 km |
| 10 mi | 16.09 km |
| 26.2 mi | 42.16 km (marathon) |
Frequently asked questions
What is 5 miles in km?
5 miles is about 8.05 kilometers.
How long is a marathon in km?
26.2 miles, which is about 42.16 kilometers.
Related tools & guides
- Kilometers to Miles Converter (reverse)
- Length Converter (all units)
- Length & distance conversion guide