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Convert European GSM to US Paper Weight

Working with a US printer? This converter helps international publishers, designers, and print buyers convert metric GSM weights to the US pound system.

Need to convert the other way? Visit our US to European Paper Weight Converter

GSM to US Weight Calculator

Important Note

US paper weights vary by paper type because each type uses a different sheet size as its basis. The same GSM paper will have different pound weights depending on whether it's classified as Bond, Text, or Cover stock. Always confirm which paper type your US printer is referencing.

Common GSM to US Weight Conversions

Standard Book Production Weights

GSMBond/WritingText/BookCoverTypical Use
44 GSM12 lb30 lb16 lbBible paper, thin
59 GSM16 lb40 lb22 lbThin paper, endpapers
67 GSM18 lb45 lb25 lbLight book paper
74 GSM20 lb50 lb27 lbStandard book paper
89 GSM24 lb60 lb33 lbQuality book paper
104 GSM28 lb70 lb38 lbPremium book paper
118 GSM32 lb80 lb44 lbHeavy text, light cover
133 GSM36 lb90 lb49 lbExtra heavy text
148 GSM40 lb100 lb55 lbLight card stock
178 GSM48 lb120 lb66 lbMedium card stock
216 GSM58 lb145 lb80 lbStandard cover stock
270 GSM72 lb182 lb100 lbHeavy cover stock

Why Multiple US Weights?

The US system measures paper weight based on 500 sheets (a ream) cut to different "basis sizes":

  • Bond/Writing: 17" × 22" (used for stationery, endpapers)
  • Text/Book: 25" × 38" (standard for book interiors)
  • Cover: 20" × 26" (used for book covers, cards)

Most book printers use the Text/Book weight, but always verify which system they're using.

Pro Tips for Working with US Printers

  • • Always specify both the weight AND the paper type (e.g., "60 lb text" not just "60 lb")
  • • Request paper samples before ordering – actual feel can vary between manufacturers
  • • US printers often have minimum order quantities that differ from European standards
  • • Factor in that US standard trim sizes differ from ISO sizes used in Europe

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