21 cm = 8.268 in, 21 centimeters equals 8.268 inches.
A decimal is what a calculator gives you; a tape measure gives you a fraction. 21 cm = 8.2677″ = 8 1/4″ — the fraction reading is how this measurement is actually marked on a rule.
| Rule precision | Fraction reading | As a decimal | Difference from exact |
|---|---|---|---|
| Nearest 1/16 | 8 1/4 ″ | 8.2500 | ±0.0177 in / ±0.450 mm |
| Nearest 1/32 | 8 9/32 ″ | 8.2812 | ±0.0135 in / ±0.344 mm |
| Nearest 1/64 | 8 17/64 ″ | 8.2656 | ±0.0021 in / ±0.053 mm |
As feet and inches, the same measurement reads 0' 8 1/4″.
Paste your measurements below, one per line, and get every value back as a decimal and as the fraction you would read off a rule. Built for working from a cut list rather than a single number.
| centimeters | inches (decimal) | Fraction (1/16) | ft + in |
|---|
All calculations run locally in your browser, nothing is uploaded.
| centimeters (cm) | inches (in) |
|---|---|
| 1 cm | 0.3937 in |
| 11 cm | 4.331 in |
| 16 cm | 6.299 in |
| 19 cm | 7.48 in |
| 20 cm | 7.874 in |
| 21 cm | 8.268 in |
| 22 cm | 8.661 in |
| 23 cm | 9.055 in |
| 26 cm | 10.24 in |
| 31 cm | 12.2 in |
| 41 cm | 16.14 in |
This page answers the question "what is 21 cm to inches?" directly: the answer is 8.268 in. If you searched the spelling without a space, 21cm to inches, it is exactly the same conversion. For any other value, use the converter above or the full centimeters to inches converter, which includes the formula, a step-by-step explanation and a longer conversion table.
21 centimeters equals 8.268 inches. To get this, multiply 21 by the conversion factor 0.393701 in per cm.
Type 21 into the converter above and read the result, it is calculated instantly in your browser. The same answer applies whether you write 21 cm to inches or 21cm to inches.
Yes. 21cm to inches and 21 cm to inches are two spellings of the same conversion, the answer is 8.268 in either way.