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20 in in centimeters

20 inches = 50.8 cm (1′ 8″)

20 in × 2.54 = 50.8 cm. 1 inch is exactly 2.54 cm.

Open 20 in in the inches to cm converter

20 inches in other forms

Decimal inches20 in
Nearest 1/16 inch20 in
Nearest 1/64 inch20 in
Feet and inches1′ 8″ (1 ft 8 in)
Centimeters50.8 cm
Millimeters and meters508 mm · 0.508 m

In words: 20 inches is 50.8 centimeters, or 1 feet 8 inches.

Reading 20 inches on a tape measure

Tape marked inNearest markOff by
1/8 in20 in0 mm
1/16 in20 in0 mm
1/32 in20 in0 mm

Nearby values

InchesCentimetersFeet and inches
11 in27.94 cm11 in
12 in30.48 cm1′ 0″
14 in35.56 cm1′ 2″
16 in40.64 cm1′ 4″
18 in45.72 cm1′ 6″
20 in50.8 cm1′ 8″
24 in60.96 cm2′ 0″
27 in68.58 cm2′ 3″
32 in81.28 cm2′ 8″
36 in91.44 cm3′ 0″
40 in101.6 cm3′ 4″

How it's calculated

Since 1959 the inch has been defined as exactly 2.54 centimeters, so the conversion itself is exact: 20 in × 2.54 = 50.8 cm. The fractions above are rounded to the nearest mark, and feet and inches split the total at 12 inches per foot.

For any other value, use the inches to cm converter.