Font Size Calculator
Calculate, preview, and convert font sizes across devices and units — perfect for responsive typography.
Calculated Results
Responsive Recommendations:
- Mobile: px
- Tablet: px
- Desktop: px
Conversions:
- REM: rem
- EM: em
- VW: vw
- Percentage: %
CSS Snippet:
font-size: clamp(14px, 1vw + 0px, 24px);
Typography Tips:
- Maintain a line-height between 1.4 – 1.8 for readability.
- For headings, use a modular ratio like 1.25x or 1.333x.
- Use contrast ratios of at least 4.5:1 for accessibility.
- Test your font sizes across different breakpoints and devices.