8 inches to centimeters
20.32 cm
8 in = 20.32 cm.
centimeters
20.32cm
8 in = 20.32 cm
The short answer
How many centimeters is 8 inches?
8 in = 20.32 cm. 1 inch = 2.540000 centimeters, so the working is 8 × 2.540000 = 20.32.
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 8 × 2.540000 = 20.32
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 | 20 | −0.32000 |
| 1 decimal | 20.3 | −0.02000 |
| 2 decimals | 20.32 | exact |
Round trip: take 20.32 cm back the other way and you land on 8.0000 in — a drift of 0.0000 in. That gap is the rounding, not the conversion.
What 8 in looks like
7.75 in
Stairs inside a dwelling may rise 7.75 in per step under code, against 7 in for other buildings.
Frequently asked questions
What is 8 inches in centimeters?
8 inches is 20.32 centimeters. 1 inch = 2.540000 centimeters, so the working is 8 × 2.540000 = 20.32.
How accurate is 20.32 cm?
Rounding to 20.32 cm and converting straight back gives 8.0000 in, a drift of 0.0000 in from the 8 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
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