Inches to Centimeters

How to convert inches to centimeters

Multiply inches by 2.54. One international inch equals exactly 2.54 centimeters. Enter any number above and the result updates instantly. The calculator keeps additional precision internally and displays a readable result for everyday use.

Worked examples

• 1 inch = 2.54 centimeters.
• 6 inches = 15.24 centimeters.
• 12 inches = 30.48 centimeters.
• 24 inches = 60.96 centimeters.

When this conversion is useful

Inches are common in U.S. product dimensions, screens and construction. Centimeters appear in metric specifications, clothing measurements and international product listings. Screen sizes measure the diagonal unless stated otherwise.

Accuracy and rounding

Keep extra decimal places until the final step when the value will be used in another calculation. For regulated, engineering, medical or safety-critical work, follow the precision and reference standards required by that application.

Frequently asked questions

How do I convert inches to centimeters?

Multiply inches by 2.54. One international inch equals exactly 2.54 centimeters.

Can I reverse the calculation?

Yes. Select the reverse option above or use the full category converter for additional units.

Calculation review: Formula and representative examples reviewed October 8, 2026.