About EM to PX Conversion
EM units in CSS are relative to their parent element's font size, while pixels (px) are fixed units. This converter helps you translate relative EM units to precise pixel values.
How to Use This Tool
- Enter the EM value you want to convert
- Specify the parent element's font size in pixels (default is 16px)
- Click "Convert to Pixels" to get the equivalent pixel value
- Copy the result for use in your designs
The Conversion Formula
The formula to convert EM to pixels is:
px = em × parent-font-size
For example, if your parent font size is 16px and you want to convert 1.5em to pixels:
1.5em × 16px = 24px
When to Use This Conversion
- Design Implementation: Convert designer's EM values to pixels for development
- Fixed Elements: When you need precise pixel measurements for certain components
- Debugging: Understand the actual pixel size of EM-based elements
- Legacy Systems: Working with older code that requires pixel values
EM vs PX: Key Differences
- EM is relative to its parent element's font size
- PX is an absolute, fixed-size unit
- EM units scale with their context (compounding in nested elements)
- PX units remain constant regardless of parent elements
- Use EM for responsive designs, PX when exact sizing is required
Best Practices
- Use EM for most typography and spacing in responsive designs
- Only convert to PX when pixel-perfect precision is necessary
- Be mindful of compounding effects with nested EM values
- Test your designs at different font size settings