100px to rem

100px equals 6.25rem when the root font size is 16px (the browser default).

Exact result6.25 rem
Rounded6.3 rem
Conversion factor1 pixel = 0.0625 rem
Reverse1 rem = 16 pixels

pixel to rem conversion table

pixelsrem
90 pixels5.625 rem
92 pixels5.75 rem
94 pixels5.875 rem
96 pixels6 rem
98 pixels6.125 rem
100 pixels6.25 rem
102 pixels6.375 rem
104 pixels6.5 rem
106 pixels6.625 rem
108 pixels6.75 rem
110 pixels6.875 rem

How to convert 100 pixels to rem

Divide the pixel value by the root font size: 100 ÷ 16 = 6.25rem. If your html element uses a different font size, divide by that number instead. To go back, multiply rem by 16.

Good to know

Using rem instead of px lets text and spacing grow when a visitor raises the browser’s default font size, which helps accessibility. Many teams keep 1px borders in px and use rem for font sizes, padding and margins.

Open the PX to REM Converter

Popular calculations

Frequently asked questions

How many rem is 100 pixels?

100 pixels is 6.25 rem.

What is the formula for pixel to rem?

rem = px ÷ root font size. With the default 16px: 1rem = 16px, 0.5rem = 8px, 1.5rem = 24px.

Can I convert other values?

Yes. Enter any pixel value and your own root font size in the converter on this page, or paste a whole stylesheet to convert every px value at once.