Quick answer
What is GLM?
GLM stands for grams per linear metre — the weight of one running metre of fabric across its full width.
GLM = GSM × Width (m)
How it works
GSM → GLM Calculator
Convert fabric GSM to GLM (grams per running metre) and find kg per metre, kg per 100 metres and the total weight of your fabric length.
GSM is weight per square metre; GLM is weight per running metre of the full width. Multiply GSM by the width in metres to convert.
Formula
The formula, in full
- GLM
- GSM × Width (m)
- KG per metre
- GLM ÷ 1000
- KG per 100 m
- KG per metre × 100
- Total weight
- KG per metre × Length (m)
Example
180 GSM, 72" wide, 1,000 m
- 01Width = 72 × 0.0254 = 1.829 m
- 02GLM = 180 × 1.829 = 329.2 g/m
- 03Total = 0.3292 × 1,000 = 329.2 kg
Use “Load Example” above to run this example in the calculator.
Industry tip
Industry tip
“Knit mills often sell by kg while cutting rooms think in metres. Keep GLM on every fabric approval card so both teams speak the same number.”
Assumptions
What this calculator assumes
- Width is the full width the GSM applies to.
FAQ
Frequently asked questions
What is GLM?
GLM stands for grams per linear metre — the weight of one running metre of fabric across its full width.
What is the difference between GSM and GLM?
GSM is per square metre and independent of width; GLM depends on width. GLM = GSM × width (m).
Formula and worked example checked by the TextileSuite team on 17 October 2026. Results are planning estimates — confirm critical numbers against your own samples and lab reports.