MATERIAL MASS PER AREA
Grams per Square Metre (GSM)
GSM states mass per unit area in grams per square metre. It is used to describe materials such as paper, board or textiles under a defined measurement method.
GRAMS PER SQUARE METRE IN PRACTICE
- Specify the materialIdentify grade and measurement basis.
- Calculate consistentlyUse compatible mass and area units.
- Validate performanceTest the required application.
Use the agreed units, actual records and approved procedures for your operation.
A WORKED EXAMPLE
200 GSM × 0.5 m² = 100 g.
An illustrative sheet material has mass per area of 200 g/m². A piece covering 0.5 m² would have a nominal mass of 100 g before other components. This does not determine its thickness or protective strength.
WHAT THIS MEANS FOR YOUR QUOTE
Agree the requirement before comparing quotes
Use the actual shipment, stock and service requirements. Record the billing unit, included work and responsibility for exceptions.
A LITTLE MORE CONTEXT
Questions about Grams per Square Metre
Is GSM thickness?
No. It is mass per area.
Does equal GSM mean equal strength?
No.
Can total mass be calculated from area?
Yes, when the stated basis applies and units match.
Source & example notes
Definition and operational example prepared by 3PL Hub. Examples describe hypothetical requirements; verify the actual records and agreed procedures for your operation.
Quantities, costs and scenarios are illustrative, not operating targets, approved handling instructions or guarantees. Source guidance reviewed 22 October 2026.
Last updated: · 3PL Hub
