Convert Ounces per Square Yard to Grams per Square Metre
1 ounce per square yard (oz/yd²) = 33.90574747 grams per square metre (g/m²). 1 g/m² = 0.02949352468 oz/yd². Example: 12 oz/yd² = 12 × 33.90574747 = 406.8689697 g/m².
Also searched as oz to gsm, oz/yd2 to gsm, osy to gsm, ounces per square yard to grams per square meter and oz to g/m².
1 oz/yd² = 33.90574747 g/m²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ounce per square yard to gram per square metre converter to paste a column from Excel.
How to Convert Ounce per Square Yard to Gram per Square Metre
- 1 oz/yd² = 33.90574747 g/m²
- 1 g/m² = 0.02949352468 oz/yd²
- Example: convert 12 oz/yd² to g/m²: 12 oz/yd² = 12 × 33.90574747 g/m² = 406.8689697 g/m²
Formula
g/m² = oz/yd² × 33.90574747488
Derivation from SI units:
- 1 oz/yd² = 28.349523125 g ÷ 0.83612736 m² = 33.90574658 g/m² (exact ratio)
- Mass in grams of one square metre of fabric (GSM); 1 g/m² = 0.001 kg/m².
Both units are defined exactly, so the factor is exact. Ounce per Square Yard definition: ounce per square yard; Gram per Square Metre definition: gram per square metre.
Worked examples
- A 12 oz/yd² denim is 406.8689697 g/m².
12 oz/yd² × 33.90574747 = 406.8689697 g/m² - A 4 oz/yd² shirting is 135.6229899 g/m².
4 oz/yd² × 33.90574747 = 135.6229899 g/m²
Ounce per Square Yard to Gram per Square Metre conversion table
| Ounces per Square Yard (oz/yd²) | Grams per Square Metre (g/m²) |
|---|---|
| 1 oz/yd² | 33.90574747 g/m² |
| 3 oz/yd² | 101.7172424 g/m² |
| 4 oz/yd² | 135.6229899 g/m² |
| 5 oz/yd² | 169.5287374 g/m² |
| 6 oz/yd² | 203.4344848 g/m² |
| 8 oz/yd² | 271.2459798 g/m² |
| 10 oz/yd² | 339.0574747 g/m² |
| 12 oz/yd² | 406.8689697 g/m² |
| 14 oz/yd² | 474.6804646 g/m² |
| 16 oz/yd² | 542.4919596 g/m² |
Where it's used
US fabric weights in ounces per square yard are converted to GSM for metric specifications, costing and fabric engineering. Multiply by 33.906.
Ounce per Square Yard to other fabric weight units
| Conversion | 1 oz/yd² equals |
|---|---|
| ounce per square yard to gram per square metre | 33.90574747 g/m² |
| ounce per square yard to ounce per square foot | 0.1111111111 oz/ft² |
| ounce per square yard to gram per square centimetre | 0.003390574747 g/cm² |
| ounce per square yard to pound per square yard | 0.0625 lb/yd² |
Frequently asked questions
How many GSM is 14 oz denim?
14 oz/yd² = 474.6804646 g/m².
How many grams per square metre are in 1 ounce per square yard?
1 oz/yd² = 33.90574747 g/m².
How do I convert ounces per square yard to grams per square metre?
Multiply the value in oz/yd² by 33.90574747. For example, 12 oz/yd² × 33.90574747 = 406.8689697 g/m².
Is the oz/yd² to g/m² conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ounce (avoirdupois)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Ounces per Square Yard to Grams per Square Metre. Retrieved October 25, 2026, from https://scientificconverters.com/fabric-weight/ounces-per-square-yard-to-grams-per-square-meter/
IEEE
Scientific Converters, "Convert Ounces per Square Yard to Grams per Square Metre," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/fabric-weight/ounces-per-square-yard-to-grams-per-square-meter/