20 inches to centimeters
50.80 cm
20 in = 50.80 cm, or 1 ft 8 in.
centimeters
50.80cm
20 in = 50.80 cm
The short answer
How many centimeters is 20 inches?
20 in = 50.80 cm, which reads as 1 ft 8 in. 1 inch = 2.540000 centimeters, so the working is 20 × 2.540000 = 50.80.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 inch = 2.540000 centimeters 20 × 2.540000 = 50.80
20 inches as 1 ft 8 in
A decimal is the right form for a spreadsheet and the wrong one for almost everything else. Split into whole units, 20 in is 1 ft 8 in — the reading you would actually give someone, and the one a tape measure, a scale, or a timetable is marked in.
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (cm) | Off by |
|---|---|---|
| Whole number | 51 | +0.20000 |
| 1 decimal | 50.8 | exact |
| 2 decimals | 50.80 | exact |
Round trip: take 50.80 cm back the other way and you land on 20.0000 in — a drift of 0.0000 in. That gap is the rounding, not the conversion.
What 20 in looks like
19 in
The front panel width is the one dimension on a 19 in equipment rack that really is 19 in.
Frequently asked questions
What is 20 inches in centimeters?
20 inches is 50.80 centimeters. 1 inch = 2.540000 centimeters, so the working is 20 × 2.540000 = 50.80.
What is 20 inches written out in whole units?
1 ft 8 in. A decimal answer such as 50.80 cm is the right shape for a form field or a spreadsheet, but the compound form is what a tape measure, a scale, or a schedule actually reads.
How accurate is 50.80 cm?
Rounding to 50.80 cm and converting straight back gives 20.0000 in, a drift of 0.0000 in from the 20 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Inches to Cm Converter
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