🧰 其他换算

字号换算器（pt、px、rem、em、%）

在pt、px、rem、em和百分比之间换算字号，适用于网页和印刷，并可调整浏览器基准字号。

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

计算原理

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.

别名

font size converterpt to pxrem to px converterem to px