📏 Length · Comparison
Mile (mi) vs Kilometer (km)
See the key differences, formulas, and conversion table.
// Side-by-side
| Mile (mi) (mi) | Kilometer (km) (km) | Mile (mi) (mi) ← |
|---|---|---|
| 1 mi | 1.609344 km | 1 km = 0.621371 mi |
| 5 mi | 8.04672 km | 5 km = 3.106856 mi |
| 10 mi | 16.09344 km | 10 km = 6.213712 mi |
| 20 mi | 32.18688 km | 20 km = 12.427424 mi |
| 25 mi | 40.2336 km | 25 km = 15.53428 mi |
| 50 mi | 80.4672 km | 50 km = 31.06856 mi |
| 100 mi | 160.9344 km | 100 km = 62.137119 mi |
| 200 mi | 321.8688 km | 200 km = 124.27424 mi |
| 500 mi | 804.672 km | 500 km = 310.6856 mi |
| 1000 mi | 1,609.344 km | 1000 km = 621.37119 mi |
Mile (mi) to Kilometer (km) formula
km = mi × 1.609344
Kilometer (km) to Mile (mi) formula
mi = km × 0.621371
How to use this comparison
Mile (mi) vs Kilometer (km) in practice
Use this page when you need to compare Mile (mi) and Kilometer (km) side by side, explain the difference to someone else, or sanity-check both directions at once. Use the dedicated converter when you already know the direction and just need a precise result for one value.
Best for comparison
Read the ratio, quick table, and reverse formula before choosing which unit to show in a report or product UI.
Use converter for precision
For a single value, open the mi to km or km to mi converter and keep the result tied to one direction.
Common mistake
Do not reuse the mi to km multiplier for the reverse direction. The reverse multiplier is 0.621371, not 1.609344.
// Frequently Asked Questions
What is the difference between Mile (mi) and Kilometer (km)?▼
Mile (mi) (mi) and Kilometer (km) (km) are both units of length. 1 mi = 1.609344 km, and 1 km = 0.621371 mi.
How do you convert Mile (mi) to Kilometer (km)?▼
To convert Mile (mi) to Kilometer (km), multiply by 1.609344. Formula: km = mi × 1.609344.
How do you convert Kilometer (km) to Mile (mi)?▼
To convert Kilometer (km) to Mile (mi), multiply by 0.621371. Formula: mi = km × 0.621371.
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