20 centimeters to inches
7.87 in
20 cm = 7.87 in.
inches
7.87in
20 cm = 7.87 in
The short answer
How many inches is 20 centimeters?
20 cm = 7.87 in. 1 centimeter = 0.393701 inches, so the working is 20 × 0.393701 = 7.87.
To the nearest 1/8 that is 7 7/8 in.
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 centimeter = 0.393701 inches 20 × 0.393701 = 7.87
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 (in) | Off by |
|---|---|---|
| Whole number | 8 | +0.12598 |
| 1 decimal | 7.9 | +0.02598 |
| 2 decimals | 7.87 | −0.00402 |
Round trip: take 7.87 in back the other way and you land on 19.9898 cm — a drift of 0.0102 cm. That gap is the rounding, not the conversion.
What 20 cm looks like
21 cm
The short side of an ISO 216 A4 sheet is 210 mm; the long side is 297 mm.
Frequently asked questions
What is 20 centimeters in inches?
20 centimeters is 7.87 inches. 1 centimeter = 0.393701 inches, so the working is 20 × 0.393701 = 7.87.
What is 20 centimeters as a fraction?
To the nearest 1/8, 20 centimeters is 7 7/8 in. That is 0.0010 in over the exact value — well inside what a tape measure can resolve.
How accurate is 7.87 in?
Rounding to 7.87 in and converting straight back gives 19.9898 cm, a drift of 0.0102 cm 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
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