Nine square feet to the yard
A square yard is 9 square feet — a 3×3-foot box. Carpet, some flooring contracts and a surprising amount of landscaping material still quote it. Enter dimensions in any unit and the calculator returns square yards ready for the supplier's price list.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- NIST Office of Weights and Measures — the US customary and SI conversion factors used throughout this tool.
- International Code Council — the International Residential Code and International Building Code.
Figures, formulas and reference tables last verified: 19 September 2026.