3 Inches to Centimetres
3 inches is exactly 7.62 cm.
3 inches = 7.62 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 3 inches to cm
Multiply by 2.54, the exact number of centimetres in an inch:
3 in × 2.54 = 7.62 cm
No rounding is involved — the inch is defined as 2.54 cm, so 7.62 cm is the exact answer, not an approximation. In millimetres that is 76.2 mm, and in metres 0.0762 m.
3 inches in other units
| Centimetres | 7.62 cm |
| Millimetres | 76.2 mm |
| Metres | 0.0762 m |
Inches to cm near 3
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 3 inches?
3 inches is exactly 7.62 centimetres. One inch is defined as 2.54 cm, so multiply 3 by 2.54.
How do I estimate 3 inches in cm without a calculator?
Multiply by 2.5, then add a little: 3 × 2.5 = 7.5, and the exact answer of 7.62 cm is 1.6% higher. For most everyday purposes, 2.5 is close enough.