Paper Weight / GSM Converter
GSM to US Basis Weight
Convert GSM to US basis weight by paper type
US Basis Weight to GSM
Convert US basis weight (lbs) to GSM
Common Paper Weights
Reference guide for common paper stocks
Formula
GSM = Basis Weight x Conversion Factor | Factor varies by paper category (Bond: 3.76, Text: 1.48, Cover: 2.70)
Frequently Asked Questions
What does GSM mean for paper?
GSM stands for grams per square meter. It measures paper weight (density) universally. Higher GSM means thicker, heavier paper. Standard copy paper is 75-80 GSM, while cardstock is 200-350 GSM.
Why are US paper weights confusing?
US basis weight varies by paper category because each type uses a different basic sheet size. A 80 lb cover stock is much heavier than 80 lb text stock. GSM eliminates this confusion by using a single universal measurement.
What paper weight should I use for business cards?
Business cards typically use 270-350 GSM (100-130 lb cover). The most common is 300 GSM (110 lb cover). Thicker cards feel more premium and professional. Some cards use 14pt or 16pt which refers to caliper thickness.
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