What Is a Font Size Converter?
A font size converter transforms typography measurements between pixels (px), points (pt), ems, rems, and percentages. It ensures consistent font sizing across print and digital media, bridging the gap between design tools and CSS implementations.
How to Use This Font Size Converter
- Enter a font size value in any unit.
- View the equivalent sizes in all other units.
- Use the converted values in your CSS or design tool.
Key Concepts
At the standard 96 DPI: 1px = 0.75pt, 1pt = 1.333px, 16px = 12pt = 1rem (default). Ems are relative to the parent element’s font size. Rems are relative to the root (html) font size, typically 16px. Points are primarily used in print design, while pixels, ems, and rems are standard in web development.
1em = 16px (default), 1rem = root font-size, 1pt = 1/72 inch
Frequently Asked Questions
Should I use px, em, or rem in CSS?
Rem is recommended for most cases as it scales consistently with user preferences. Use em for component-level relative sizing. Use px only when exact pixel control is required.
What is the default browser font size?
Most browsers default to 16px. This means 1rem = 16px. Users can change this in browser settings for accessibility, which is why relative units (rem, em) are preferred.
How do points relate to pixels?
At 96 DPI (standard screen resolution), 1pt = 1.333px and 1px = 0.75pt. So 12pt = 16px. At different DPIs (like 72 DPI on older Macs), the relationship changes.