Convert Grams per Square Metre to Ounces per Square Yard
1 gram per square metre (g/m²) = 0.02949352468 ounces per square yard (oz/yd²). 1 oz/yd² = 33.90574747 g/m². Example: 180 g/m² = 180 × 0.02949352468 = 5.308834443 oz/yd².
Also searched as gsm to oz, gsm to oz/yd2, g/m2 to oz/yd², grams per square meter to ounces per square yard and gsm to osy.
1 g/m² = 0.02949352468 oz/yd²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gram per square metre to ounce per square yard converter to paste a column from Excel.
How to Convert Gram per Square Metre to Ounce per Square Yard
- 1 g/m² = 0.02949352468 oz/yd²
- 1 oz/yd² = 33.90574747 g/m²
- Example: convert 180 g/m² to oz/yd²: 180 g/m² = 180 × 0.02949352468 oz/yd² = 5.308834443 oz/yd²
Formula
oz/yd² = g/m² × 0.02949352468164
or oz/yd² = g/m² ÷ 33.90574747488
Derivation from SI units:
- Mass in grams of one square metre of fabric (GSM); 1 g/m² = 0.001 kg/m².
- 1 oz/yd² = 28.349523125 g ÷ 0.83612736 m² = 33.90574658 g/m² (exact ratio)
Both units are defined exactly, so the factor is exact. Gram per Square Metre definition: gram per square metre; Ounce per Square Yard definition: ounce per square yard.
Worked examples
- A 180 g/m² T-shirt jersey weighs 5.308834443 oz/yd².
180 g/m² × 0.02949352468 = 5.308834443 oz/yd² - A 400 g/m² denim weighs 11.79740987 oz/yd².
400 g/m² × 0.02949352468 = 11.79740987 oz/yd²
Gram per Square Metre to Ounce per Square Yard conversion table
| Grams per Square Metre (g/m²) | Ounces per Square Yard (oz/yd²) |
|---|---|
| 20 g/m² | 0.5898704936 oz/yd² |
| 50 g/m² | 1.474676234 oz/yd² |
| 80 g/m² | 2.359481975 oz/yd² |
| 120 g/m² | 3.539222962 oz/yd² |
| 150 g/m² | 4.424028702 oz/yd² |
| 180 g/m² | 5.308834443 oz/yd² |
| 200 g/m² | 5.898704936 oz/yd² |
| 250 g/m² | 7.37338117 oz/yd² |
| 300 g/m² | 8.848057404 oz/yd² |
| 400 g/m² | 11.79740987 oz/yd² |
| 500 g/m² | 14.74676234 oz/yd² |
Where it's used
Fabric weights in GSM from mills, ISO 3801 tests and data sheets are converted to ounces per square yard for US apparel, denim and canvas buyers. Divide by 33.906.
Gram per Square Metre to other fabric weight units
| Conversion | 1 g/m² equals |
|---|---|
| gram per square metre to ounce per square yard | 0.02949352468 oz/yd² |
| gram per square metre to ounce per square foot | 0.003277058298 oz/ft² |
| gram per square metre to gram per square centimetre | 0.0001 g/cm² |
| gram per square metre to pound per square yard | 0.001843345293 lb/yd² |
Frequently asked questions
How do I convert GSM to oz/yd²?
Divide by 33.9057: 180 GSM = 5.308834443 oz/yd².
Is GSM the same as oz per linear yard?
No. oz/yd² is per square yard; oz per linear yard depends on fabric width, so convert width first.
How many ounces per square yard are in 1 gram per square metre?
1 g/m² = 0.02949352468 oz/yd².
How do I convert grams per square metre to ounces per square yard?
Multiply the value in g/m² by 0.02949352468, or divide it by 33.90574747. For example, 180 g/m² × 0.02949352468 = 5.308834443 oz/yd².
Is the g/m² to oz/yd² 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
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
- 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)".
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 Grams per Square Metre to Ounces per Square Yard. Retrieved October 25, 2026, from https://scientificconverters.com/fabric-weight/grams-per-square-meter-to-ounces-per-square-yard/
IEEE
Scientific Converters, "Convert Grams per Square Metre to Ounces per Square Yard," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/fabric-weight/grams-per-square-meter-to-ounces-per-square-yard/