Fabric Weight Calculator
Convert between GSM (g/m²) and oz/yd² — with Royal Apparel's full fabric weight reference
Jersey & knit fabric weight guide
Ideal for warm-weather tees, tanks, and layering pieces. Drapes softly against the skin with a breathable, airy feel. Best for fashion-forward or fitted silhouettes where comfort and printability matter most.
Royal Apparel examples: Fine Jersey #5 (4.4 oz · 149 GSM), Triblend Jersey #20 (4.0 oz · 136 GSM), Burnout Wash Jersey #17BO (4.0 oz · 136 GSM), Modal/Poly #55 (4.2 oz · 142 GSM)
The everyday workhorse. Substantial enough to hold its shape and hide imperfections, while still comfortable year-round. Great for basics, uniforms, and retail-ready tees that need to look polished off the rack.
Royal Apparel examples: Fine Heavyweight Jersey #14 (6.0 oz · 203 GSM), Organic Baby 1x1 Rib #2ORG (6.0 oz · 203 GSM), Open End Heavyweight Jersey #19 (6.4 oz · 217 GSM)
Built to last. Dense, structured fabric with a premium hand feel — ideal for outerwear-adjacent pieces, high-wear workwear, and garments where durability and body are priorities over drape.
Royal Apparel examples: Cotton Spandex Jersey #1 (6.7 oz · 227 GSM), Magnum Cotton Jersey #75 (7.5 oz · 254 GSM), Eco Triblend Spandex Jersey #33 (7.2 oz · 244 GSM)
Fleece & French terry fabric weight guide
A transitional-season staple. Light enough to layer under a jacket but warm enough on its own. French terry construction — with its looped interior — keeps it breathable and moisture-friendly, making it popular for hoodies, joggers, and athleisure.
Royal Apparel examples: Burnout Wash Fleece #3BO (7.0 oz · 237 GSM), Eco Triblend Fleece #37 (7.0 oz · 237 GSM), Organic RPET Spandex Rib #96R (7.0 oz · 237 GSM)
The sweet spot for most sweatshirts and pullover hoodies. Warm without being bulky, with enough substance for embroidery and screen printing to sit cleanly on the fabric surface.
Royal Apparel examples: Fashion Fleece #3 (7.4 oz · 251 GSM), Triblend Fleece #25 (7.4 oz · 251 GSM), Triblend French Terry #40 (7.5 oz · 254 GSM), Organic RPET Fleece #96 (7.4 oz · 251 GSM)
Maximum warmth and structure. These fabrics feel substantial and luxurious — think premium crewnecks, coaches jackets, and cold-weather staples built to be outerwear in their own right.
Royal Apparel examples: Deluxe Premium Fleece #57 (10.0 oz · 339 GSM), Magnum Cotton Fleece #81 (14.0 oz · 475 GSM)
Unit converter
Conversion factor: 1 oz/yd² = 33.9057 g/m² | Click any fabric row below to load its weight.
Royal Apparel fabric reference
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