At One Place

20 mm to in

20 millimeters in inches
20 mm = 0.7874 in
in = mm × 0.03937007874

20 millimeters is 0.7874 inches. To get there, multiply by 0.03937007874.

Values either side

Millimeters near 20, converted to inches.
Millimeters Inches
16 mm 0.62992
17 mm 0.66929
18 mm 0.70866
19 mm 0.74803
20 mm ← 0.7874
21 mm 0.82677
22 mm 0.86614
23 mm 0.90551
24 mm 0.94488

How the conversion works

The relationship is in = mm × 0.03937007874. 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 mm in inches?
20 mm is 0.7874 in.
How do you convert millimeters to inches?
Multiply by 0.03937007874.

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