Carpet & Padding Square Yard Calculator
Calculate wall-to-wall carpet and foam padding in square yards and square feet for standard 12-foot and 15-foot roll widths.
Enter Your Dimensions
US • ftHow We Calculated This
• Install 7/16-inch dense bonded polyurethane rebound pad (8 lb density) for optimal foot feel and longevity.
Formula & Volumetric Method
Square Yards = (Room Length in ft × Room Width in ft) ÷ 9. Broadloom carpet is sold in 12-ft or 15-ft wide rolls.
Calculations are performed strictly using standard civil engineering constants. Volumetric outputs are normalized to true compaction rates, ensuring purchased quantities match jobsite yields.
Jobsite Engineering Guidelines
- Carpet rolls must all face the same pile sweep direction; reversing roll direction creates an obvious two-tone mismatch.
Frequently Asked Questions
How accurate is the Carpet & Padding Square Yard Calculator for ordering materials?
Our calculations match standard store packaging sizes in the US, Canada, UK, and Australia. We include a safety waste buffer (default 8% to 12%) so you do not run short due to uneven ground or spillage.
Why should I add extra for waste when ordering?
Uneven ground, cutting scrap, and leftover mix in the wheelbarrow or mixer drum consume an extra 5% to 15% of material. Ordering only the exact measurement usually leaves you short, which can lead to expensive extra delivery fees.
Does this calculator support both Imperial and Metric units?
Yes. You can switch between US Customary (feet, inches, cubic yards, pounds), Canadian units, UK metric, and Australian standards using the region selector in the header or the unit dropdown on each input.