rem to mm
A converter that calculates the mm from a rem for a given rem size to measure the millimeters
Hot Keys
C
Calculate and copy the result of calculation.
V
Calculate the result.
B
Copy the result of calculation.
R
Reverse the converter to "MM to REM".
Q
Focus the "REM" input.
W
Focus the "REM Size" input.
FAQ
How to convert REM to MM?
To convert rem to mm, you should know total size of 1 REM, default is 16px Then, just apply formula: (rem * rem size) * 0.2645833333 For example, with 16px size of 1rem, 3rem will be converted to: (3 * 16) * 0.2645833333 = 12.7mm
What is the REM to MM formula?
(rem * rem size) * 0.2645833333
What is rem unit?
REM is defined relative to the font size of the root element. The root element is matched by the :root pseudo-class or the html selector. 1 REM therefore takes on the value which is given to the font-size of the root element. This means that 1 REM keeps the same value throughout your whole CSS code.
REM to MM Conversion Table if rem size is 16px
| rem | mm |
|---|---|
| 1rem | 4.233mm |
| 2rem | 8.467mm |
| 3rem | 12.7mm |
| 4rem | 16.933mm |
| 5rem | 21.167mm |
| 6rem | 25.4mm |
| 7rem | 29.633mm |
| 8rem | 33.867mm |
| 9rem | 38.1mm |
| 10rem | 42.333mm |
| 11rem | 46.567mm |
| 12rem | 50.8mm |
| 13rem | 55.033mm |
| 14rem | 59.267mm |
| 15rem | 63.5mm |
| 16rem | 67.733mm |
| 17rem | 71.967mm |
| 18rem | 76.2mm |
| 19rem | 80.433mm |
| 20rem | 84.667mm |
| 21rem | 88.9mm |
| 22rem | 93.133mm |
| 23rem | 97.367mm |
| 24rem | 101.6mm |
| 25rem | 105.833mm |