Type Size by Math

For those times where you just don't want to "do the math" yourself, let Illustrator do it for you. In the Font Size field of the Character palette (Window>Character), type * (for multiply) and the number (we used 1.5 in our example). Press Return (PC: Enter) and Illustrator will do the math for you. In our case, change 9-point type to 13.5 points. Use * for Multiply and / for Divide just remember to click after the unit of measurement.