Use the GRT Calculator to…

  • Discover the perfect typography for your website by entering your current font, font size, and content width
  • Optimize for font size, line height, and even characters per line (CPL)
  • Experiment with new fonts and different sizes on any device
  • Apply GRT to your own projects with the free responsive GRT CSS loadout!

Way more than a line height calculator

The GRT Calculator is actually a design system calculator that provides the foundational elements you’ll need for every project:

  • a typographic scale based on your primary font size,
  • associated line heights, and
  • spacing units derived from the primary line height

Use the GRT Calculator to see how this works!

Dig deeper ↓