Miles ↔ Kilometers Converter
Convert between miles and kilometers instantly
Conversion Result
10 miles = 16.09 km
16.09 kilometers • 10,000 meters • 6.21 miles (nautical)
📚 Miles ↔ Kilometers Conversion Details
Miles to Kilometers Formula
kilometers = miles × 1.609344
To convert miles to kilometers, multiply the miles by 1.609344.
Kilometers to Miles Formula
miles = kilometers ÷ 1.609344
To convert kilometers to miles, divide the kilometers by 1.609344.
Bidirectional Conversion
This converter works both ways simultaneously:
- Type in miles → kilometers updates automatically
- Type in kilometers → miles updates automatically
- No buttons to click - works as you type
Common Uses
- Road distance measurement
- Running and marathon distances
- Vehicle fuel economy
- Travel planning
📏 How This Converter Works
This is a bidirectional converter that works in real-time:
- Miles → Kilometers: When you type in the miles field, the kilometers field automatically updates
- Kilometers → Miles: When you type in the kilometers field, the miles field automatically updates
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
// Bidirectional Conversion Logic:
km = miles × 1.609344
miles = km ÷ 1.609344
// Example 1: Type "10" in miles
km = 10 × 1.609344 = 16.09344
// Example 2: Type "20" in kilometers
miles = 20 ÷ 1.609344 = 12.4274
km = miles × 1.609344
miles = km ÷ 1.609344
// Example 1: Type "10" in miles
km = 10 × 1.609344 = 16.09344
// Example 2: Type "20" in kilometers
miles = 20 ÷ 1.609344 = 12.4274
📊 Conversion Table
| Miles | Kilometers | Common Usage |
|---|---|---|
| 1 mi | 1.61 km | Short walk |
| 5 mi | 8.05 km | Running race |
| 10 mi | 16.09 km | 10-mile race |
| 26.2 mi | 42.16 km | Marathon |
| 50 mi | 80.47 km | Ultramarathon |
| 100 mi | 160.93 km | Century ride |
❓ Frequently Asked Questions
Q: How many kilometers are in a mile?
A: There are approximately 1.609344 kilometers in one mile.
Q: What's the difference between miles and kilometers?
A: Miles are used in the US and UK, while kilometers are used in most other countries. 1 mile = 1.609344 kilometers.
Q: Do I need to click any button to convert?
A: No! The conversion happens automatically as you type in either field.
Q: How accurate is this converter?
A: This converter uses the exact conversion factor (1.609344) and provides calculations up to 6 decimal places.