REM to CM Converter
Use this free online rem to cm converter tool to convert root em units to centimeters. Centimeters are an absolute unit used in international print design. This tool enables conversion between web typography and metric print measurements.
To convert rem to centimeters, multiply the rem value by the root font-size to get pixels, then multiply by 2.54 and divide by 96. The default root font-size is 16px. This conversion is valuable for international print projects.
Conversion Formula
cm = (rem × root font-size × 2.54) ÷ 96
For example, to convert 6rem to cm with 16px root font-size, calculate (6 × 16 × 2.54) ÷ 96 = 2.54cm. Similarly, 3rem approximately equals 1.27cm because (3 × 16 × 2.54) ÷ 96 ≈ 1.27.
REM to CM Converter Conversion Table (Root: 16px)
| REM | CM |
|---|---|
| 0.0625rem | 0.0265cm |
| 0.25rem | 0.1058cm |
| 0.5rem | 0.2117cm |
| 0.75rem | 0.3175cm |
| 1rem | 0.4233cm |
| 1.25rem | 0.5292cm |
| 1.5rem | 0.635cm |
| 2rem | 0.8467cm |
| 2.5rem | 1.058cm |
| 3rem | 1.27cm |
| 4rem | 1.693cm |
| 6rem | 2.54cm |
| 8rem | 3.387cm |
| 10rem | 4.233cm |
| 11rem | 4.657cm |
| 12rem | 5.08cm |
| 13rem | 5.503cm |
| 14rem | 5.927cm |
| 16rem | 6.773cm |
| 20rem | 8.467cm |
| 30rem | 12.7cm |
| 36rem | 15.24cm |
| 48rem | 20.32cm |
| 50rem | 21.17cm |
| 60rem | 25.4cm |
| 62rem | 26.25cm |
| 64rem | 27.09cm |
| 70rem | 29.63cm |
| 75rem | 31.75cm |
| 80rem | 33.87cm |
| 90rem | 38.1cm |
| 100rem | 42.33cm |
| 120rem | 50.8cm |
What is REM?
REM (Root EM) is a relative CSS unit based on the root element's font size, typically 16px by default in most browsers. Unlike EM units which cascade based on parent elements, REM provides consistent sizing throughout the document. This makes REM ideal for creating scalable, accessible designs that respect user font-size preferences.
What is CM?
Centimeters (cm) are an absolute CSS unit representing physical centimeters, commonly used in print design and international contexts. In web contexts, 1cm equals approximately 37.8 pixels. While uncommon for screen design, centimeters are valuable for print stylesheets where physical dimensions matter.