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1440px

0.25rem to px

0.25rem is 4px at the default 16px root font size.

0.25rem in px · 16px root
4 px

px = rem × root font size — shown here at the browser default root font size of 16px.

0.25rem at every root font size

0.25rem converted at each common root font size
Root font size0.25rem equalsCSS
10px2.5pxfont-size: 2.5px;
12px3pxfont-size: 3px;
14px3.5pxfont-size: 3.5px;
16px default4pxfont-size: 4px;
18px4.5pxfont-size: 4.5px;
20px5pxfont-size: 5px;

Converter

Nearby values

rempx
0.125rem2px
0.25rem4pxthis page
0.375rem6px
0.5rem8px
0.625rem10px
0.75rem12px

Questions

What is 0.25rem in px?

0.25rem = 4px at the browser default root font size of 16px. px = rem × root font size.

What is 0.25rem in px at a different root size?

At 10px root: 2.5px. At 12px root: 3px. At 14px root: 3.5px. At 16px root: 4px. At 18px root: 4.5px. At 20px root: 5px.

How is 0.25rem calculated?

px = rem × root font size. Here: 0.25 × 16 = 4.

All rem values

Computed from the CSS Values and Units specification. See the full rem to px table.