8 Inches to Centimetres
8 inches is exactly 20.32 cm.
8 inches = 20.32 cm
Type in either box. Inches also take fractions and feet: 1 1/2, 3/4, 5'7", 5 ft 7 in.
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Inches, as a fraction
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Feet and inches
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Millimetres
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Metres
How to convert 8 inches to cm
Multiply by 2.54, the exact number of centimetres in an inch:
8 in × 2.54 = 20.32 cm
No rounding is involved — the inch is defined as 2.54 cm, so 20.32 cm is the exact answer, not an approximation. In millimetres that is 203.2 mm, and in metres 0.2032 m.
8 inches in other units
| Centimetres | 20.32 cm |
| Millimetres | 203.2 mm |
| Metres | 0.2032 m |
Inches to cm near 8
| Inches | Centimetres |
|---|---|
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 8 in | 20.32 cm |
| 10 in | 25.4 cm |
| 12 in | 30.48 cm |
| 14 in | 35.56 cm |
| 15 in | 38.1 cm |
Need a different value? Type it into the converter above, or go back to the full cm to inches converter.
Frequently asked questions
How many centimetres is 8 inches?
8 inches is exactly 20.32 centimetres. One inch is defined as 2.54 cm, so multiply 8 by 2.54.
How do I estimate 8 inches in cm without a calculator?
Multiply by 2.5, then add a little: 8 × 2.5 = 20, and the exact answer of 20.32 cm is 1.6% higher. For most everyday purposes, 2.5 is close enough.