Caliper is expressed as a point size in thousandths of an inch.The measurement of a paper's thickness is also known as it's 'caliper' and is measured using a tool called a micrometer.24lb and 28lb Bond stock is very similar to the 90gsm and 110gsm paper often used by lawyers and accountants in. This makes it very similar to the 80gsm A4 paper that is most common in the UK and the rest of Europe. The heavier paper grade commonly referred to as 'cardstock' is technically known as 'cover' Standard office paper in the USA is 20lb Bond Letter Size, which is equivalent to 75gsm paper.When standard size sheets are cut down to commonly used sizes, they are still referred to by their original basis weight calculation.So a larger standard size sheet of a lighter thinner text-weight paper can weigh more than a smaller standard size sheet of a thicker heavier cover-weight paper.If 500 sheets of a paper's standard sheet size weighs 100 lbs., then the paper weight or basis weight of that type of paper will be 100 lb. Cover paper and inner paper need different conversion formulas, so make sure to be clear about which you need.Each type of paper has it's own range of basis weights because their standard sizes are different.Paper weight is measured in pounds per 500 standard sheets within its type.Here are a few examples of paper type standard sheet sizes: Each type of paper has a different 'standard sheet' size.Let's explain further!īond, Book, Text, Index, Bristol, Laid, Wove, and Cover Paper comes in many types or categories, each with a unique weight in LBS because of the way it is calculated.The TYPE of paper is a key element when using LBS because.LBS alone does not adequately convey the weight of paper.GSM is a universal measurement and applies to all paper types, making it a better measurement of a paper's weight.Paper weight, also known as BASIS WEIGHT, is measured in LBS (pounds) and GSM (grams per square meter).'cover'? Follow along as we explain how paper weight is calculated and what it means. 'text' paper lighter and thinner than 65 lb. Are you finding paper weights to be confusing? Why is 80 lb.

Pt to lb paper conversion