About the Fabric Weight Loss Calculator
This tool compares a fabric sample’s dry weight before and after textile processing to measure weight loss or gain. It is useful for textile labs, dye houses, finishing teams, and quality control staff who need quick loss percentage, yield, process factor, and GSM change calculations.
How to use this calculator
- Enter the initial dry fabric weight in grams.
- Enter the final dry fabric weight in grams after processing and drying or conditioning.
- Enter the sample area in square meters for GSM calculations.
- Select Calculate Weight Loss to view percentage loss, yield, GSM values, and process factor.
- Use Reset to restore the default sample values.
How it works
The calculator uses the initial dry weight, final dry weight, and sample area. Initial weight must be greater than 0, final weight can be 0 or more, and sample area must be greater than 0 because GSM is calculated from weight divided by area.
Weight loss is calculated as initial weight minus final weight. Weight loss percentage is that difference divided by the initial weight, multiplied by 100. If the final weight is higher than the initial weight, the result is shown as a weight gain instead of a loss.
Remaining yield is calculated as final weight divided by initial weight, multiplied by 100. The process factor is the same ratio expressed as a decimal. Initial GSM and final GSM are calculated by dividing each weight in grams by the sample area in square meters.
For best results, compare weights measured under the same moisture condition, such as oven-dry or consistently conditioned samples, because textile moisture regain can change measured weight.
Example calculation
If the initial fabric weight is 100 g, the final fabric weight is 92 g, and the sample area is 0.25 m², the weight change is 8 g. The weight loss percentage is 8 ÷ 100 × 100 = 8.00%, and the remaining yield is 92 ÷ 100 × 100 = 92.00%. Initial GSM is 100 ÷ 0.25 = 400.0 g/m², final GSM is 92 ÷ 0.25 = 368.0 g/m², so the GSM change is -32.0 g/m².
Frequently asked questions
What does fabric weight loss percentage mean?
It is the percentage of the original sample weight removed during processing, such as scouring, washing, enzyme treatment, dyeing, or finishing.
Why is sample area required?
The calculator requires sample area to compute GSM values, since GSM equals sample weight in grams divided by area in square meters.
Can this calculator show weight gain?
Yes. If the final dry weight is greater than the initial dry weight, it reports a weight gain percentage and a positive GSM change.
Should I use wet or dry fabric weight?
Use dry or consistently conditioned weights for both before and after measurements. Mixing wet and dry measurements will distort the result.
What is remaining yield in textile processing?
Remaining yield is the final weight as a percentage of the initial weight. For example, a 92 g final weight from a 100 g initial sample gives a 92% yield.