How is paper rolls measured?

Paper rolls are typically measured by their diameter and width, with common units being inches or millimeters. The weight of the roll is also an important measurement, often expressed in grams per square meter (gsm) or pounds, which indicates the paper's thickness and density. Additionally, the length of the paper within the roll can be calculated based on the roll's diameter and the basis weight of the paper. These measurements help determine the roll's suitability for various printing or packaging applications.