areal density · SI / textile / paper · Modern
1 g/m² = 0.001 kg/m².
Converter
areal density · U.S./Imperial textile trade · Modern trade
ounce per square yard
exact
- Record
- M578
- Definition quality
- Exact by definition
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 oz/yd² = 28.349523125 g / 0.83612736 m² ≈ 33.905747 g/m².
Reference value
One ounce per square yard is exactly 0.033905747 kilogram per square metres.
History & use
Fabric sellers in U.S. customary contexts often quote oz/yd² while international specifications use g/m².
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high
- David B. Newell and Eite Tiesinga (eds.), National Institute of Standards and Technology — https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.330-2019.pdf
- National Bureau of Standards / Commonwealth national standards laboratories — https://www.nist.gov/pml/us-surveyfoot
- National Institute of Standards and Technology — https://www.nist.gov/pml/special-publication-811