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Pixels to Ems Conversion

The tool below allows you to work out the em sizes from pixels (or vice versa).

Pixel to Em Converter

  • Set a default pixel size for body (usually 16px)
  • Then, convert a pixel value to em, based on the default pixel size
  • Or, convert an em value to pixels, based on the default pixel size

Set a default pixel size:


Convert PX to EM:

Convert EM to PX:


Body Font Size

In the table below, select a body font size in pixels (px) to display a complete "px to em and percent" conversion table.

Tip: The default font size is usually 16px.

Note What is the difference between PX, EM and Percent?
Pixel is a static measurement, while percent and EM are relative measurements. The size of an EM or percent depends on its parent. If the text size of body is 16 pixels, then 150% or 1.5 EM will be 24 pixels (1.5 * 16). Look at CSS Units for more measurement units.