Quick Reference Chart for Picas, Points, Inches, Millimeters

" = inch
' = foot
in = inch
ft = foot
p = pica
pt = point(s)
pts = points
mm = millimeter

Type size/leading:
10/12 = 10 pt type set with 12 pt leading

Combo pica/point sizes:
8p3 = 8 picas and 3 points or 99 pts

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IN MM
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1 25.4
1.25 31.75
1.50 38.099
1.75 44.449
2.00 50.8

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IN P common PTS common
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1 6.022 6 72.270 72
1.25 7.528 7.5 90.337 90
1.50 9.033 9 108.405 108
1.75 10.539 10.5 126.472 126
2.00 12.044 12 144.540 144

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1 ft = 12 inches = 72 picas
1 in = 6 picas = 72 points
1 pica = 12 points
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INCH POINTS PICAS,POINTS
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.25 18 1p6
.50 36 3p
.75 54 4p6

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1.25 inches = 7p6 (7 picas and 6 points)
1.50 inches = 9p
1.75 inches = 10p6
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MILLIMETER INCH (approx.)
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1 0.039
10 0.39
100 3.93
200 7.87
300 11.81
400 15.74
500 19.68

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Decimals/Fractions (INCHES)
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1/32 = .03125
1/16 = .0625
1/8 = .125
1/4 = .25
1/2 = .50
3/4 = .75

Quick reference chart
courtesy of
About.com Desktop Publishing
http://desktoppub.about.com