Fraction	Decimal
1/16"	.0625
1/8"	.125
3/16"	.1875
1/4"	.25
5/16"	.3125
3/8"	.375
7/16"	.4375
9/16"	.5625
5/8"	.625
11/16"	.6875
13/16"	.8125
7/8"	.875
15/16"	.9375

1 Micron (um) metric = .001 mm or .000 03937 inches
1 Mil standard = .001 inches or .0254 mm
1 Gauge standard = .0001 inches or .00254 mm
1 mm = .03937 inches

Micron to Mil Conversion
40 um (.04)/.0254 =1.57 or 1.6 Mil

Micron	Mil	Gauge
20	.8	80
30	1.2	120
40	1.6	160
50	2	200

Click here for the paper weight converter page.

GSM = Grams per square meter
Lbs (#) = US Pounds
Values provided as a guide only. Paper weights vary with paper type.

GSM	lbs.(#)
75 GSM	50# Text (or 20lb Bond)
90 GSM	60# Text (or 24lb Bond)
75 GSM	50# Text (or 20lb Bond)
90 GSM	60# Text (or 24lb Bond)
106 GSM	70# Text (or 28lb Bond)
120 GSM	80# Text
135 GSM	90# Text
150 GSM	100# Text
160 GSM	60# Cover
175 GSM	35# Cover
185 GSM	70# Cover
220 GSM	80# Cover
250 GSM	93# Cover
275 GSM	100# Cover
300 GSM	110# Cover
325 GSM	120# Cover
355 GSM	120# Double Thick Cover