At One Place

20 mi to km

20 miles in kilometers
20 mi = 32.18688 km
km = mi × 1.609344

20 miles is 32.18688 kilometers. To get there, multiply by 1.609344.

Values either side

Miles near 20, converted to kilometers.
Miles Kilometers
16 mi 25.7495
17 mi 27.35885
18 mi 28.96819
19 mi 30.57754
20 mi ← 32.18688
21 mi 33.79622
22 mi 35.40557
23 mi 37.01491
24 mi 38.62426

How the conversion works

The relationship is km = mi × 1.609344. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Common questions

What is 20 mi in kilometers?
20 mi is 32.18688 km.
How do you convert miles to kilometers?
Multiply by 1.609344.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked