Jason Pearce | Tools - CSS Font Size Comparison

CSS: Comparing Font Size, Percentage, Em, Point, and Pixel

A much better resource can be found here: Incremental Differences

Pixel (fixed)	Point (fixed)	Percent (var)	Em (var)	Size (var)	Font Size (var)	Head Size (var)
		Arial 55%	Arial 0.55em
Arial 9 px	Arial 6 pt	Arial 60%	Arial 0.60em
Arial 10 px	Arial 7 pt	Arial 65%	Arial 0.65em		Arial Size 1	Arial Head 6
Arial 11 px	Arial 8 pt	Arial 70%	Arial 0.70em
Arial 12 px	Arial 9 pt	Arial 75%	Arial 0.75em
		Arial 80%	Arial 0.80em		Arial Size 2
Arial 13 px	Arial 10 pt	Arial 85%	Arial 0.85em
		Arial 90%	Arial 0.90em	Arial x-small		Arial Head 5
Arial 14 px	Arial 11 pt	Arial 95%	Arial 0.95em
Arial 15 px	Arial 12 pt	Arial 100%	Arial 1.00em			Arial Head 4
Arial 16 px	Arial 13 pt	Arial 105%	Arial 1.05em	Arial small	Arial Size 3
		Arial 110%	Arial 1.10em
		Arial 115%	Arial 1.15em
Arial 18 px	Arial 14 pt	Arial 120%	Arial 1.20em	Arial medium	Arial Size 4	Arial Head 3
Arial 20 px	Arial 15 pt	Arial 125%	Arial 1.25em	Arial large	Arial Size 5	Arial Head 2

Size	Percentage	Em	Point	Pixel
Arial x-small Arial small Arial medium Arial large	Arial 70% Arial 80% Arial 90% Arial 100% Arial 110% Arial 120%	Arial 0.7em Arial 0.8em Arial 0.9em Arial 1em Arial 1.1em Arial 1.2em	Arial 7 pt Arial 8 pt Arial 9 pt Arial 10 pt Arial 11 pt Arial 12 pt Arial 13 pt Arial 14 pt	Arial 7 px Arial 8 px Arial 9 px Arial 10 px Arial 11 px Arial 12 px Arial 13 px Arial 14 px
Verdana x-small Verdana small Verdana medium Verdana large	Verdana 70% Verdana 80% Verdana 90% Verdana 100% Verdana 110% Verdana 120%	Verdana 0.7em Verdana 0.8em Verdana 0.9em Verdana 1em Verdana 1.1em Verdana 1.2em	Verdana 7 pt Verdana 8 pt Verdana 9 pt Verdana 10 pt Verdana 11 pt Verdana 12 pt Verdana 13 pt Verdana 14 pt	Verdana 7 px Verdana 8 px Verdana 9 px Verdana 10 px Verdana 11 px Verdana 12 px Verdana 13 px Verdana 14 px
Times New Roman x-small Times New Roman small Times New Roman medium Times New Roman large	Times New Roman 70% Times New Roman 80% Times New Roman 90% Times New Roman 100% Times New Roman 110% Times New Roman 120%	Times New Roman 0.7em Times New Roman 0.8em Times New Roman 0.9em Times New Roman 1em Times New Roman 1.1em Times New Roman 1.2em	Times 7 pt Times 8 pt Times 9 pt Times 10 pt Times 11 pt Times 12 pt Times 13 pt Times 14 pt	Times 7 px Times 8 px Times 9 px Times 10 px Times 11 px Times 12 px Times 13 px Times 14 px
Georgia x-small Georgia small Georgia medium Georgia large	Georgia 70% Georgia 80% Georgia 90% Georgia 100% Georgia 110% Georgia 120%	Georgia 0.7em Georgia 0.8em Georgia 0.9em Georgia 1em Georgia 1.1em Georgia 1.2em	Georgia 7 pt Georgia 8 pt Georgia 9 pt Georgia 10 pt Georgia 11 pt Georgia 12 pt Georgia 13 pt Georgia 14 pt	Georgia 7 px Georgia 8 px Georgia 9 px Georgia 10 px Georgia 11 px Georgia 12 px Georgia 13 px Georgia 14 px