How to convert miles to kilometers
Use the formula below. ConvertPulse keeps the full conversion constant during calculation and rounds only the displayed result.
For example, 10 mi equals 16.09344 km.
Miles to Kilometers reference table
| Miles | Kilometers |
|---|---|
| 1 mi | 1.609344 km |
| 5 mi | 8.04672 km |
| 10 mi | 16.09344 km |
| 25 mi | 40.2336 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
Understanding the result
Keep extra decimal places while you work, then round once at the end. For everyday use, two to four decimal places is usually enough. Scientific, engineering, and regulated work may require a specified precision or reference standard.
Miles and kilometers for distance
Miles are used on roads in the United States and a small number of other places, while kilometers are standard across most of the world. The international mile equals exactly 1.609344 kilometers, making the same factor suitable for driving, running, cycling, and route planning.
- Multiply miles by 1.6 for a fast estimate.
- A 5-mile distance is a little over 8 kilometers.
- Use the exact factor for race distances, mapping, and engineering work.
Reference: NIST SI conversion table.
Frequently asked questions
What is the conversion formula?
Miles × 1.609344 = Kilometers.
How accurate is this converter?
ConvertPulse uses established conversion constants and keeps additional precision during calculation before displaying a readable result.
Can I use this result for professional work?
The calculation is suitable for general use. Regulated engineering, medical, or legal work may require specific rounding rules and independently verified standards.