Enter a point size and your root font size in pixels. Get the rem value so your type scales with the root element.
Points are a print unit. Browsers treat 1pt as 4/3 px at 96 DPI. Rem is relative to the root font size. So you convert pt to px, then divide by the root pixel value.
If your root is not 16px, change the base field. This converter uses whatever root you set. Check your html or :root font-size before trusting the number.
