Choosing Fabric Weight for Your Project

Fabric weight is measured in GSM — grams per square metre — and it is often the single most useful number on a spec sheet.

Under 150 gsm: lightweight

Voile, chiffon and lightweight silks fall here. They drape and move but offer little structure on their own.

150–300 gsm: medium weight

Most shirting, dress cotton and jersey sits in this band — versatile enough for the majority of garment projects.

Over 300 gsm: heavyweight

Suiting wool, canvas and upholstery velvet live here, built for structure and durability rather than drape.