Type Scale is a tool that you can use to find the perfect font scaling for your website. You can set the base font size, the scaling method, the preview text, the font family, and the font weight. And you can see the results immediately (how the sizing will look in paragraphs).
How to Use
Enter the base font size of my body content. then select from the surrounding values for headers and small copy. There are no rules. Just experiment and have fun. Try using the values for line-height, margins or whatever, and see what works.
A type tool by Jeremy Church.Type Scale