With all the discussion of ems for font sizes this week, I thought it appropriate if I told you about a neat tool that will help you set the default font size so that you can use ems and still have a good idea of how big the font will display on the screen. Ems don't have an absolute size, but are rather based on the value of the font size in the browser or parent elment. So determining how big an em is can be difficult. But the Em Calculator will help you choose ems that are based on a default size that you set. You put in the size in pixels you want, and the em calculator will tell you how many ems that is (based on a standard text size of 16px).

• Set Your Font Sizes: Em Calculator
• How Big is an Em?
• What Font Size Measure to Use
• CSS Sizes
• Size Units in CSS
• See all the Software Picks
• Suggest Software for the Pick of the Week

Web Design Software Pick of the Week: Em Calculator originally appeared on About.com Web Design / HTML on Sunday, June 27th, 2010 at 14:08:50.

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