Kilometers to Miles Conversion — Formula & Chart
Convert kilometers to miles with the exact formula, a printable chart, and mental math shortcuts. 1 km = 0.6214 miles. Covers driving, running, and travel.
Kilometers to miles is the most common distance conversion, needed for driving in the US or UK, comparing race distances, and understanding international speed limits. The CalcHub Distance Converter handles any value, but the formula is easy to do in your head once you know the trick.
The Formula
Miles = Kilometers x 0.6214To go the other way: Kilometers = Miles x 1.6093
Worked Example 1 — Driving
Your GPS says the destination is 240 km away. In miles: 240 x 0.6214 = 149.1 miles.
Worked Example 2 — Running
A 10K race is 10 kilometers. In miles: 10 x 0.6214 = 6.21 miles.
A marathon is 42.195 km = 26.22 miles.
The Fibonacci Trick
The ratio between consecutive Fibonacci numbers approaches 1.618 — very close to the km-to-miles factor of 1.6093. So you can use Fibonacci numbers as a lookup: 5 km is about 3 miles, 8 km is about 5 miles, 13 km is about 8 miles.
For any number, multiply by 0.6 and add a small correction. Example: 100 km x 0.6 = 60, plus 2% (1.2) = 61.2 miles. Exact answer: 62.1. Close enough for navigation.
Km to Miles Conversion Chart
| Kilometers | Miles | Kilometers | Miles |
|---|---|---|---|
| 1 | 0.62 | 50 | 31.07 |
| 2 | 1.24 | 60 | 37.28 |
| 5 | 3.11 | 80 | 49.71 |
| 10 | 6.21 | 100 | 62.14 |
| 15 | 9.32 | 150 | 93.21 |
| 20 | 12.43 | 200 | 124.27 |
| 25 | 15.53 | 250 | 155.34 |
| 30 | 18.64 | 300 | 186.41 |
| 40 | 24.85 | 500 | 310.69 |
Speed Limit Conversion
| Km/h | Mph | Typical Use |
|---|---|---|
| 30 | 19 | School zone |
| 50 | 31 | Urban area |
| 60 | 37 | City road |
| 80 | 50 | Rural road |
| 100 | 62 | Highway (India, EU) |
| 110 | 68 | Highway (Australia) |
| 120 | 75 | Autobahn recommended |
| 130 | 81 | EU highway max |
Practical Use Cases
Rental car abroad: You rent a car in Europe where the speedometer reads km/h. The highway limit is 130 km/h. That is 80.8 mph — much faster than US highway speeds. Fitness tracking: Your running app shows 5.2 km. That is 3.23 miles. For pace comparison, a 5:30/km pace equals about 8:51/mile. Flight distances: Delhi to Mumbai is 1,148 km or 713 miles. Knowing this helps compare with US domestic route distances.Why do most countries use kilometers?
The metric system was adopted internationally through the Treaty of the Metre in 1875. The US signed it but never fully transitioned domestically, preferring miles for road signs and everyday use.
What is a nautical mile?
A nautical mile is 1.852 km or 1.151 statute miles. It is based on one minute of latitude and is used in aviation and marine navigation.
How accurate is Google Maps distance in km vs miles?
Google Maps is accurate to within 1-2% for driving distances. The km and mile readings are both derived from the same route calculation, so neither is more accurate than the other.
Related Calculators
- Driving Cost Calculator — fuel cost per trip
- Running Pace Calculator — convert pace between km and miles
- Gas Mileage Calculator — fuel efficiency
- Flight Distance Calculator — great-circle distance