swap_horiz Need miles to kilometers instead?

20 Kilometers to Miles

20 kilometers equals 12.43 miles using the km to mi formula. Scroll down for the full calculation.

20 km = 12.43 mi
km × 0.621371 = mi
Try: 15 km to mi 19 km to mi 21 km to mi 25 km to mi
20 km is also
20 km = 20,000 m 20 km = 65,616.8 ft 20 km = 787,401.57 in 20 km = 2,000,000 cm 20 km = 20,000,000 mm 20 km = 21,872.27 yd
km
12.43 mi

How to Convert Kilometers to Miles

km × 0.621371 = mi
  1. Start with 20 km
  2. Multiply by 0.621371: 20 × 0.621371 = 12.43
  3. Result: 20 km = 12.43 mi

The same formula works for any value. Multiply by 0.621371 to go from kilometers to miles.

Quick Mental Conversion

For a rough estimate, multiply kilometers by 0.6. For example, 20 km × 0.6 = 12 mi. The exact answer is 12.43 mi.

Common Kilometer to Mile Conversions

Kilometers (km) Miles (mi)
1 km 0.6214 mi
2 km 1.24 mi
5 km 3.11 mi
10 km 6.21 mi
15 km 9.32 mi
20 km 12.43 mi
25 km 15.53 mi
50 km 31.07 mi
75 km 46.6 mi
100 km 62.14 mi
250 km 155.34 mi
500 km 310.69 mi
1,000 km 621.37 mi
calculate Kilometer to Mile Converter swap_horiz Mile to Kilometer Converter functions Kilometer to Mile Formula straighten All Length / Distance Conversions

Frequently Asked Questions

20 kilometers equals 12.43 miles.
The formula is: km × 0.621371 = mi. See the km to mi formula page for worked examples.
Use the miles to kilometers converter. The reverse formula is: mi × 1.609344 = km.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (km × 0.621371 = mi) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026