# Fabric Roll Weight Calculator

> Calculate a fabric roll’s net and gross weight from GSM, width and length, or work out the metres on a roll from its weight.

Category: Textile & apparel · Applies to: Worldwide · Last updated: 2026-10-29
Interactive calculator: https://calculators.geekmidst.com/calculators/fabric-roll-weight-calculator

Weight per running metre is GSM × width in metres. Multiply by the length for the roll’s net weight, or divide the net weight by it to find the length.

Also called: Fabric kg to metres calculator, Fabric roll length calculator.

## Inputs
- Find (options: Roll weight, Roll length; default weight)
- Fabric GSM (unit g/m²; default 180)
- Fabric width (unit cm; default 180)
- Roll length (unit m; default 100)
- Roll weight (gross) (unit kg; default 33.9)
- Core and packing weight (unit kg; default 1.5; optional)

## Results
- Net fabric weight
- Gross roll weight
- Roll length
- Roll length
- Weight per running metre

## Formula

```
g per metre = GSM × Width (m);  Net kg = Length (m) × g per metre ÷ 1000;  Length = (Gross − Core) × 1000 ÷ g per metre
```

Where:
- GSM: grams per square metre
- Core: tube and wrapping weight
- 1 yd: 0.9144 m

## Worked example
1. Weight per metre = 180 g/m² × 1.80 m = 324 g.
2. Net = 100 m × 324 g = 32.4 kg; gross = 32.4 + 1.5 = 33.9 kg.
3. 100 m ÷ 0.9144 = 109.36 yd.

**Result:** A 100 m roll of 180 GSM fabric, 180 cm wide, weighs 32.4 kg net, 33.9 kg with a 1.5 kg core.

## What the result means

Knits are usually sold by weight and wovens by length; this converts between the two for a given GSM and width.

## Assumptions and limits
- GSM and width are uniform along the roll.
- Actual GSM varies within tolerance, so metres from weight are an estimate; measure on an inspection machine for invoicing.

## Questions

### How many metres are in 1 kg of fabric?

1000 ÷ (GSM × width in m). For 180 GSM, 1.8 m wide: 1000 ÷ 324 = 3.09 m per kg.

### Should I include the core?

Enter the core and packing weight to get net fabric from a gross scale reading.

## Related calculators
- [Fabric GSM Calculator](https://calculators.geekmidst.com/calculators/fabric-gsm-calculator)
- [Fabric Consumption per Garment Calculator](https://calculators.geekmidst.com/calculators/fabric-consumption-per-garment-calculator)
- [Carton Board Weight Calculator](https://calculators.geekmidst.com/calculators/carton-board-weight-calculator)

Source: GM¹X CalcVerse — https://calculators.geekmidst.com/calculators/fabric-roll-weight-calculator