How are rem conversions calculated?

rem conversions assume a 16px root font size by default (the browser default). You can change this to match your project's root font size.

What is the difference between em and rem?

em is relative to the parent element's font size; rem is relative to the root element's font size. rem is more predictable for layouts.

Yes. Enter a viewport width or height to calculate vw and vh equivalents for any pixel value.

在 px、rem、em、pt 和 vw 之間轉換 CSS 值。

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在 px、rem、em、pt 和 vw 之間轉換 CSS 值。由 JustUse.me 提供 — 免費、無廣告、保護隱私。此工具完全在你的瀏覽器中運行，你的檔案不會被上傳至任何伺服器。