How much does 20 weigh? Is it heavier than 20g? How to calculate the weight Where did I see that the weight of the paper should be 20? I don't know how heavy it is?

How much does 20 weigh? Is it heavier than 20g? How to calculate the weight Where did I see that the weight of the paper should be 20? I don't know how heavy it is?

In coastal areas, because of many foreign-funded printing enterprises, many printing agencies are still widely using some old paper. The weight of paper is expressed in terms of quantity and weight. Generally, it is expressed in terms of quantity, which is commonly known as "gram weight". Quantity refers to the quality relationship of paper unit area, expressed in g / m2