Fabric GSM Converter

GSM stands for Grams per Square Meter. It measures the weight of fabric and indicates its thickness and density. Higher GSM means heavier, thicker fabric, while lower GSM indicates lighter, thinner material. GSM is the standard unit used globally in textile manufacturing.

To convert GSM to ounces per square yard, multiply the GSM value by 0.0294935. For example, 200 GSM × 0.0294935 = 5.9 oz/yd². Our converter tool performs this calculation instantly for you.

Lightweight fabric typically ranges from 80 to 150 GSM. This includes fabrics like poplin, voile, and lawn. Ultra lightweight fabrics are under 80 GSM (chiffon, georgette), while medium weight fabrics range from 150-250 GSM (twill, oxford).

Fabric shrinkage during washing causes fibers to compress, increasing the fabric density. This results in a higher GSM measurement after washing. Our shrinkage calculator helps you determine the post-wash GSM based on expected shrinkage percentage.

Roll weight is calculated using the formula: Weight (kg) = (GSM × Width in inches × Length in meters × 0.0254) / 1000. This accounts for converting inches to meters and grams to kilograms. Our roll weight calculator automates this calculation.

Standard t-shirts typically use 120-180 GSM fabric. Lightweight summer t-shirts may use 120-140 GSM, while premium heavyweight t-shirts use 160-200 GSM. Single jersey knit is most common at 140-180 GSM for a good balance of comfort and durability.

Denim GSM ranges from 200-450 depending on weight. Lightweight denim is 200-300 GSM (summer jeans), medium weight is 300-380 GSM (standard jeans), and heavyweight denim is 380-450 GSM (workwear, vintage styles).

GSM measurement accuracy depends on sampling method and equipment. Standard industry tolerance is ±5%. For accurate results, cut multiple samples from different areas of the fabric, measure with a calibrated GSM cutter and precision scale, and calculate the average.

Yes, GSM is used for both woven and knit fabrics. However, typical GSM ranges differ. Knit fabrics generally have lower GSM (120-280 for common knits) compared to woven fabrics of similar thickness due to their stretch and construction. Always reference fabric-specific GSM charts.

GSM measures weight per area, while thickness measures physical depth. Two fabrics can have the same GSM but different thicknesses due to fiber density. For example, a tightly woven fabric may be thinner but same GSM as a loftier knit. GSM is more commonly used in textile specifications.