GSM ↔ oz converter
One ounce per square yard is 33.906 gsm. Enter either number and the other updates. Values are rounded to two decimals.
Typical weights by garment
| Garment | GSM | oz/yd² |
|---|---|---|
| Light shirting / voile | 80–110 | 2.4–3.2 |
| Poplin shirting | 110–140 | 3.2–4.1 |
| T-shirt, light | 130–150 | 3.8–4.4 |
| T-shirt, standard | 150–180 | 4.4–5.3 |
| T-shirt, heavyweight | 200–240 | 5.9–7.1 |
| Polo / pique | 180–220 | 5.3–6.5 |
| French terry | 240–320 | 7.1–9.4 |
| Hoodie fleece | 280–400 | 8.3–11.8 |
| Chino / bottom twill | 240–320 | 7.1–9.4 |
| Denim | 340–475 | 10–14 |
| Linen shirting | 120–180 | 3.5–5.3 |
| Canvas / jacket | 300–450 | 8.8–13.3 |
Ranges are typical, not universal. Confirm the weight and the tolerance with the mill, and check whether it is quoted on greige or finished fabric. See how to choose fabric weight.