- 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!