Inches to CM Converter

Enter a length in inches to see it in centimetres, millimetres and metres.

Updated October 27, 2026

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Formula

centimetres = inches × 2.54 (one inch is exactly 2.54 cm). Millimetres are cm × 10 and metres are cm ÷ 100.

Worked example

10 in × 2.54 = 25.4 cm = 254 mm = 0.254 m.

Inches	Centimetres	Millimetres	Metres
1	2.54	25.4	0.0254
5.5	13.97	139.7	0.1397
10	25.4	254	0.254
12	30.48	304.8	0.3048
72	182.88	1828.8	1.8288

Frequently asked questions

How many cm is 10 inches?

10 inches is 10 × 2.54 = 25.4 cm, which is 254 mm or 0.254 m.

How do I convert inches to cm?

Multiply the inches by 2.54. For 5.5 inches that is 5.5 × 2.54 = 13.97 cm.

How many mm is an inch?

One inch is exactly 25.4 millimetres, so 2 inches is 50.8 mm.

How tall in cm is 6 feet?

6 feet is 72 inches, and 72 × 2.54 = 182.88 cm, or 1.8288 m.

How we calculate

Inches to CM Converter

Formula

Worked example

Frequently asked questions

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