Result: 24px
1. Select "Single Value" from the converter type options
2. Verify the base font size (default is 16px) or adjust if needed
3. Enter either a REM or pixel value in the respective input field
4. The corresponding conversion will appear automatically in the other field
1. Click "Batch Convert" from the converter options
2. Choose your conversion direction (REM to Pixels or Pixels to REM)
3. Paste your CSS properties into the input area
4. Click "Convert" to transform all values at once
5. Copy the converted values using the "Copy to Clipboard" button
1. Select "Framework Presets" from the converter type options
2. Choose your preferred framework (Tailwind CSS, Bootstrap, or Material UI)
3. Browse through common classes and elements
4. Use the provided conversions as reference for your project
5. Click the copy icon next to any value to copy it to your clipboard
1. Click the "Visual Size Preview" button below the converter options
2. Enter different REM values to see their actual size on screen
3. Compare different sizes side by side
4. Use the preview to make informed decisions about your typography and spacing
Save time by using the batch converter when working with legacy CSS files. Simply copy an entire CSS block, and the converter will automatically identify and convert all pixel or REM values while preserving your original formatting.
The ability to convert back and forth between REMs and pixels is an excellent tool for your web development toolbox. REM (Root EM) units are relative to the root element's font size, which is usually 16 pixels by default in most browsers. Our conversion tool helps developers accurately transform REM values to pixels and vice versa, ensuring consistent and accessible web designs. Check out our post, Converting REM to Pixels for more information.
Learn the differences between rems and pixels.
When working with REM units, consider these best practices:
Many modern CSS frameworks use REM units as their default unit of measurement:
REM units are supported in all modern browsers (IE9+) and provide several accessibility benefits:
When converting legacy code from pixels to REM units, use our batch converter tool to quickly transform multiple values. This ensures your existing designs maintain their proportions while gaining the benefits of relative units.
For most projects, keeping a base font size of 16px (1rem) is recommended as it aligns with browser defaults and user expectations. However, you can use our converter to experiment with different base sizes while maintaining proportional scaling across your design.
REM stands for "Root EM." It's a unit of measurement in CSS that's relative to the font size of the root element (html). By default, 1 REM equals 16 pixels, but this can be adjusted by changing the root font size. REM units make it easier to maintain consistent spacing and sizing across your entire website.
Converting between REM and pixels is important for maintaining consistent designs, especially when working with legacy code or specific design requirements. While REM units are preferred for responsive design, sometimes you need to match pixel-perfect designs or work with systems that use pixel values. Understanding the conversion helps ensure accuracy across different devices and screen sizes.
REM units are generally recommended for modern web development because they scale with user preferences and provide better accessibility. Use REM for font sizes, margins, padding, and other properties that should scale proportionally. However, pixels might be better for certain properties like border widths or when you need exact measurements that shouldn't scale.
To calculate REM values manually, divide your desired pixel value by the root font size (typically 16px). For example, if you want 24px, divide 24 by 16 to get 1.5rem. However, using our converter tool is much faster and helps avoid calculation errors, especially when working with multiple values.
Yes, you can change the base font size by setting the font-size property on your html element. Our converter allows you to adjust the base font size to match your project's settings, ensuring accurate conversions. However, it's recommended to stick with the default 16px unless you have a specific reason to change it.
Yes, REM units are supported in all modern browsers, including Internet Explorer 9 and above. This widespread support makes REM a reliable choice for contemporary web development. However, if you need to support very old browsers, our converter can help you maintain pixel values as fallbacks.