Inches to centimeters Converter

Convert inches (in) to centimeters (cm) with the exact factor, formula, four examples, and a quick browser calculator.

Source value (in)

Converted value (cm) 2.54

1 in = 2.54 cm

Formula and usage notes

This exact inches to centimeters page is built for quick lookup searches, product dimensions, shipping forms, schoolwork, and spreadsheet checks.

Formula: cm = in × 2.54. The result is rounded for display, but the calculation uses the full factor shown here.

1 in = 2.54 cm

6 in = 15.24 cm

12 in = 30.48 cm

24 in = 60.96 cm

How do I convert in to cm?

Multiply the inches value by 2.54 to get centimeters.

Can I use this for product dimensions?

Yes. Keep the original value next to the converted value so reviewers can see the source unit.

Why do results differ slightly between sites?

Most differences come from rounding. This page calculates with the displayed factor and rounds only the visible result.