🧰 その他の変換

フォントサイズ変換ツール（pt・px・rem・em・%）

Web・印刷向けに、pt、px、rem、em、パーセント間でフォントサイズを変換。ブラウザの基準サイズも調整可能。

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

計算の仕組み

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.

別名

font size converterpt to pxrem to px converterem to px