px ⇄ rem Converter
Convert px to rem/em units with custom root font size, batch support
px ⇄ rem Converter is a free online Developer tool. Convert px to rem/em units with custom root font size, batch support Related terms: px · rem · em · 单位 · 换算 · css. Use it on this page without signing in.
| px | rem | 说明 |
|---|---|---|
| 8px | 0.5rem | 小标签 |
| 16px | 1rem | 正文基准 |
| 20px | 1.25rem | 强调文字 |
| 24px | 1.5rem | 小标题 |
| 32px | 2rem | 标题 |
rem 相对根元素（html）字号，em 相对父元素。计算在浏览器本地完成。
使用说明
- 设置根字号（默认 16px，对应浏览器默认）
- 输入 px 值自动换算为 rem/em，或反向输入
- 支持批量换算：每行一个数值
- 结果一键复制
常见问题
- 数据处理安全吗？ 全程浏览器本地计算，不联网
- rem 和 em 区别？ rem 相对根元素字号，em 相对父元素字号
- 项目根字号不是 16？ 在设置里改成你的根字号即可，如 14px
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FAQ about px ⇄ rem Converter
What can px ⇄ rem Converter do?
px ⇄ rem Converter is a Developer tool. Convert px to rem/em units with custom root font size, batch support You can finish the job on this page.
Who should use px ⇄ rem Converter?
Anyone handling px · rem · em · 单位 · 换算 · css who does not want to install desktop software can use px ⇄ rem Converter in the browser.
Is px ⇄ rem Converter safe? Is my data uploaded?
This tool runs in your browser. We do not collect the content you enter into px ⇄ rem Converter just because you used it.
What similar tools exist?
Related tools in the same Developer group are listed at the bottom of this page.