3 min read
Planning a road trip across borders? If you are driving between metric and imperial countries, you will need to convert distances quickly. Here are the formulas and tricks to keep you oriented.
The Conversion
1 mile = 1.609 km | 1 km = 0.621 miles
Quick trick: miles ร 1.6 = km | km ร 0.6 = miles
The Fibonacci Trick
The ratio between miles and kilometres is remarkably close to the golden ratio (1.618). This means consecutive Fibonacci numbers approximate the conversion:
- โถ 5 miles โ 8 km (actual: 8.05)
- โถ 8 miles โ 13 km (actual: 12.87)
- โถ 13 miles โ 21 km (actual: 20.92)
- โถ 21 miles โ 34 km (actual: 33.80)
Common Driving Distances
| Miles | Kilometres | Context |
|---|---|---|
| 10 | 16 | Short commute |
| 50 | 80 | City to suburb |
| 100 | 161 | Day trip |
| 250 | 402 | Long day drive |
| 500 | 805 | Major road trip |
Road Trip Tips
- โถ GPS apps let you switch units โ match it to local road signs
- โถ Fuel planning: Fill up at distance intervals that make sense in local units
- โถ Border crossings: Signs switch units immediately โ be prepared
- โถ Odometer: Most cars can toggle between miles and km in settings
๐ Try our free length converter
Open Converter โ