Kilometers to Miles Converter
Convert kilometers (km) to miles (mi) instantly with accurate results.
1 Kilometer (km) = 0.621371 Mile (mi)
Conversion Table
| Kilometer (km) | Mile (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.213712 mi |
| 25 km | 15.53428 mi |
| 50 km | 31.06856 mi |
| 100 km | 62.137119 mi |
| 500 km | 310.685596 mi |
| 1000 km | 621.371192 mi |
What Is Kilometers to Miles Conversion?
Converting kilometers to miles translates a distance from the metric system to the imperial system. One kilometer equals approximately 0.621371 miles. The kilometer is the standard unit of distance in most countries, while the mile is primarily used in the United States and United Kingdom for road distances, speed limits, and everyday distance measurements. This conversion is essential for travelers, runners, drivers, and anyone working across both measurement systems.
Conversion Formula
Miles = Kilometers × 0.621371
Conversion Table
| km | mi |
|---|---|
| 1 | 0.621371 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 25 | 15.53428 |
| 50 | 31.06856 |
| 100 | 62.137119 |
| 250 | 155.342798 |
| 500 | 310.685596 |
| 1000 | 621.371192 |
Practical Examples
A 5K race is 5 kilometers, which equals approximately 3.11 miles — a useful conversion for tracking your pace on American running apps. If your GPS shows a road trip of 400 km in Europe, that is about 248.5 miles, giving you a familiar sense of the driving distance. Marathon runners know the full 42.195 km race distance is 26.2 miles. Speed limit signs in Canada showing 100 km/h translate to roughly 62.1 miles, important for American drivers crossing the border who think in miles per hour.
When Do You Need This Conversion?
You need km to miles conversion when driving in the US or UK after traveling from a metric country, comparing race distances (5K = 3.1 miles, 10K = 6.2 miles), understanding speed limits, or planning travel itineraries across countries using different distance units.
Related Conversions
Frequently Asked Questions
One kilometer equals approximately 0.621371 miles. A useful approximation is that 5 km is roughly 3.1 miles, or 8 km is about 5 miles. For quick mental math, multiply kilometers by 0.6 for a rough estimate.
Common running distances: a 5K race is 3.107 miles, a 10K is 6.214 miles, a half marathon is 21.0975 km (13.109 miles), and a full marathon is 42.195 km (26.219 miles). These standard race distances are recognized worldwide by World Athletics.
One international mile is defined as exactly 1,609.344 meters, so 1 mile = 1.609344 km exactly. Inversely, 1 km = 1/1.609344 miles ≈ 0.6213712 miles. This relationship is based on the 1959 international agreement that defined the yard as exactly 0.9144 meters.