Kilometers to Miles Converter
Convert kilometers to miles using the formula km × 0.621371 = mi. The calculator below shows higher precision results. The reference table is rounded for readability.
Formula and Step-by-Step
Step-by-step: 1 km to mi
- Start with 1 km
- Multiply by 0.621371: 1 × 0.621371 = 0.6214
- Result: 1 km = 0.6214 mi
Conversion Table
Common kilometers to miles values. The table and calculator both use the same conversion formula shown above.
Common Distances in Miles
- 1 km = 0.62 miles
- 5 km = 3.1 miles (common parkrun distance)
- 10 km = 6.2 miles (standard 10K race)
- 42.2 km = 26.2 miles (marathon)
- 100 km = 62 miles
Quick Mental Conversion
For a rough estimate, multiply kilometers by 0.6. For example, 10 km × 0.6 = 6 mi. The exact answer is 6.21 mi, so this works well for quick mental math.
What Are Kilometers and Miles?
What is a Kilometer?
A kilometer is a metric unit of length equal to 1,000 meters. It is commonly used for road distances and travel measurements in most countries.
What is a Mile?
A mile is a unit of distance equal to 5,280 feet or exactly 1.609344 kilometers. It is used for road distances in the United States and the United Kingdom.
Why convert kilometers to miles?
People typically convert kilometers to miles when comparing road distances, travel routes, and race lengths between metric and imperial systems.