REM to CM Converter

Convert REM units to Centimeters (CM) for metric standards.

2.54cm

About REM to CM Converter

The REM to CM converter enables designers to translate responsive web typography into metric measurements for international print production. Centimeters are the standard measurement unit in most countries, making this conversion essential for global projects. The tool uses the root font size and the standard relationship where 1 inch equals 96 CSS pixels and 2.54 centimeters.

Formula

CM = (REM × Root Font Size) ÷ 37.79528

Examples

2rem (16px root) = 0.847cm
5rem (16px root) = 2.117cm
6rem (16px root) = 2.54cm

Reference

  • • 1 inch = 2.54 centimeters
  • • 1 inch = 96 pixels
  • • Centimeters are standard for ISO paper sizes (A4)
  • • CSS centimeters match physical print size

Frequency Asked Questions

How to convert 4rem to cm?

At 16px root: 4rem ≈ 1.69cm.

Why use centimeters?

International standard for print and physical goods.

What's an A4 page in REM?

A4 is 21cm x 29.7cm. Approx 50rem x 70rem.

How many REM equal 1cm?

Approx 2.36rem (at 16px root).