Kilometres ↔ miles
Distance conversion: km ↔ mi (1 mi ≈ 1.609 km). Units from header when set.
Results
Enter data and click Calculate.
Frequently asked questions
- When should I quote distance in km instead of miles?
- Kilometres in metric countries and most European maps. Miles in the US, UK road context and mph speedometers.
- Can the result be negative?
- Not for a physical distance — a negative value usually means a typo, not a meaningful conversion.
- How precise is the result?
- 1 mi = 1.609344 km (international mile). Output precision matches what you enter.
- What is the most common input mistake?
- Confusing nautical miles (1.852 km) with land miles, or converting the same number twice.