Fabric GSM Calculator
Calculate fabric grams per square metre from sample mass and sample area.
A QUICK WALKTHROUGH
How to use this tool
- Enter sample mass and sample area in the stated units.
- Use grams for mass and square metres for area.
- Calculate GSM locally and review the method limits.
Formula and limits
GSM = sample mass (g) ÷ area (m²). Condition and moisture state are not corrected. This does not certify a textile specification or recommend a process setting.
Privacy
Inputs remain in this browser and are not uploaded.
GOOD TO KNOW
Common questions
What is the GSM formula?
GSM is sample mass in grams divided by sample area in square metres. Use consistent units; moisture and conditioning corrections are not applied.
Does this certify fabric specifications?
No. It is an arithmetic calculation and does not certify a textile specification or account for moisture state.