There are two ways to measure a paper s weight.
Art paper sizes gsm.
297mm x 420mm 11 69 x 16 54 a2 size.
420mm x 594mm 16 54 x 23 39.
At about 8x12 inches and 12x17 inches respectively artwork on this size of paper is nice because it appeals to many art buyers as they are neither too small nor too large for the walls they will hang on.
Gsm is a consistent number for papers running smaller to larger regardless of paper basis weight.
Measuring paper weight in grams per square meter commonly referred to as gsm or g m 2 is literally taking the weight in grams of 1 square meter of paper.
In offices 70 80 gsm is the standard weight of paper that is being used in many parts of the world though heavier paper having 100 or more gsm is preferred by some people for communication purposes.
However both still are considered 55 gsm paper because that number represents a certain thickness or thinness.
The north american way is to weigh 500 sheets of a common size of paper such as 8 1 2 x 11 to come up with a lb measurement.
Of reams per bundle.
Calendering part of the paper manufacturing process where the paper web passes between polished metal rolls.
In addition 55 gsm paper will not weigh that amount when it s cut to letter size or poster size.
Used through much of the world you will encounter a4 and a3 papers most often as these are popular sizes for artwork.
148mm x 210mm 5 83 x 8 27 a4 size 210mm x 297mm 8 27 x 11 69 a3 size.
C2s royal art paper 170 gsm size 51x76 cm rmwt 32 9 kg 500 sheets.
The thickness of paper when compared to its weight.
For instance the letter size paper is a4 55 gsm paper.
This increases the paper s smoothness and provides a uniform thickness caliper.
When choosing the weight of a fine art paper what is more accurate lb or gsm.
Paper help guide understanding the differences in paper weights.
Here s a quick list of paper weights including grammage gsm.
128gsm matt coated paper.
A0 is the size being 1 square meter in area and so any sheet of paper having 80 gsm would be 80 grams while another a0 sheet having 100 gsm would be 100 g in weight.