Fabric Consumption Calculator
Calculate total weight of fabric required per piece or per dozen for standard knitted T-shirts and Polo models.
Calculator Inputs
Enter details on the left and click "Calculate Fabric" to view results.
How this calculation works
Estimated Fabric Consumption — Basic Knit T-Shirt/Polo Model. Calculates front and back body panel surface areas using flat width and length parameters, factoring in seam allowances and fabric density:
Garment Weight (g) = [ ((Body Length + Hem Allow) * (Chest Width + Seam Allow) * 2 * GSM) / 10,000 ] * (1 + Wastage % / 100)
Important assumptions
- Garment Style: Designed strictly for standard rectangular-cut knit structures (basic short-sleeve crewneck or Polo).
- Chest Width Flat: Measured flat pit-to-pit. A seam allowance factor (+2cm total flat margin) is added to cover joining stitches.
- Body Length: Shoulder high point to bottom edge. A hem allowance factor (+4cm total margin) is added for bottom folding.
- Fabric GSM: Grams per Square Meter. Assumes density is uniform across the fabric roll.
- Wastage: Standard 10% allowance accommodates cutting margins, panel faults, and roll ends.
- Exclusions: This model is NOT intended as a universal formula for: raglan garments, trousers, leggings, complex panel garments, highly shaped garments, or garments requiring marker-based consumption.
Example calculation
For a T-shirt with Body Length = 70cm (+4cm), Chest Width = 50cm (+2cm), GSM = 180, and Wastage = 10%:
Weight = [ (74 * 52 * 2 * 180) / 10000 ] * 1.10 = 138.52g * 1.10 = 152.4 grams/garment (1.83 kg per dozen).
Disclaimer: Actual production consumption may vary based on pattern shape, marker efficiency, size ratio, fabric width, shrinkage, and garment construction.