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Printer Paper Guide: GSM (g/m2)

measuring paper thickness

Last Updated on April 14, 2021 by Christian Ralph

The weight of your print media can make a huge difference to your printing needs and preferences.

For those looking for a new printer, the maximum GSM capability is an important factor to take into account.

The max GSM capability means the highest density media that a printer can effectively print on.

So if you’re a graphic designer wanting to create print outs on a high density card stock, a printer with a high max GSM becomes a necessity.

What is GSM or g/m2?

GSM or g/m2 is a measurement of print media thickness. Short for grams per square metre, the higher the GSM value, the thicker the media.

Paper thickness GSM chart

The chart below explains the degradations in GSM and how they can affect your printer purchase;

U.S. Basis WeightGSMCaliperMedia Type
25lbs40gsm Tracing paper
50lbs74gsm Standard Printer Paper
60lbs89gsm3ptsBook pages
70lbs105gsm3.5ptsEnvelopes/Flyers
80lbs118gsm4ptsPosters/Brochures
120lbs325gsm14ptsGreeting Cards/Book Covers
130lbs400gsm16ptsBusiness Cards

 

What other ways of measuring paper weight are used?

An alternative method for measuring paper weight is the U.S. Basis Weight.

The U.S. Basis weight is based on lbs measurements of the media and denotes the thickness and overall weight of a print media

This weight standard is based on the weight of one ream (500 sheets) measured in lbs.

This measurement is commonly dented as xlb where x = the pound weight.

If a paper is said to have a weight of 70lb, this means that one ream of paper weighs 70lbs.

Another, less commonly used method of paper weight measurement is the Caliper measurement method.

Using a caliper tool, this method measures the physical thickness of the media and assigns the media a pts value.

The higher the pts value, the thicker the media so a business card may score 18pts of thickness whilst a book page may score only 3pts.

Take a look at our wide range of printers here to find a model that can handle the media thickness you want to print on!