PX to REM Converter
Convert between pixels and rem units. Adjust base font size for your project.
| Pixels | REM | PT (print) |
|---|
Free PX to REM Calculator
The Toolts PX to REM Converter helps web developers translate pixel values to rem units and vice versa. REM (root em) units are relative to the root element's font size, making them essential for building responsive, accessible websites. The converter includes a quick reference table showing common pixel sizes and their rem equivalents.
Why Use REM Instead of Pixels?
Pixels are absolute units that do not scale when users change their browser's default font size. REM units are relative to the root font size (typically 16px), so they automatically scale with user preferences. This is critical for accessibility — users who set larger default fonts (due to low vision or preference) will see your layout scale proportionally when you use rem units.
How the Conversion Works
The formula is simple: rem = px ÷ base font size. With the default base of 16px, 24px equals 1.5rem (24 ÷ 16 = 1.5). If your project uses a different base (like 10px for easier math), adjust the base font size field and all conversions update instantly.