🧰 Other Conversions

Font Size Converter (pt, px, rem, em, %)

Convert font sizes between pt, px, rem, em and percentages for web and print, with adjustable browser base size.

Value

Source unit

Browser base size (px) Default browser is 16px. Many designs use 10px ("62.5%") for easy math.

Parent em size (px) em is relative to its parent; rem is relative to the root.

Converted size

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Preview:

The quick brown fox jumps over the lazy dog.

Unit	Value	CSS

How the math works

1 pt = 1.3333 px at 96 DPI (CSS standard). 1 rem = base px. 1 em = parent px. 100% = parent px. All conversions route through pixels first.

Use rem for accessible body text (respects user zoom), em for component-scoped sizing, px for fixed UI chrome.

Also known as

font size converterpt to pxrem to px converterem to px