EM to Percent Converter

EM to percent conversion

EM units are relative to the parent element font size. One EM equals the parent font size in pixels. Percent is computed from a reference size. Use this when you need percentage values for fluid or responsive layouts.

How it works

• 1 EM = parent font size in pixels
• Percent = (EM × parent size) ÷ reference size × 100
• Set parent and reference to match your design context
• Use percent when you want sizes to scale with a container or base

Tips

• Keep reference size consistent across your project
• Account for parent-child relationships in nested elements
• Test at different viewport sizes
• Pair with media queries for breakpoint-specific scaling