What Is the Carpet/Flooring Calculator?
Estimate carpet, vinyl, tile, or hardwood flooring material needed to cover stair treads, risers, and landings. This calculator accounts for waste factor and converts between square feet, square yards, and linear feet for accurate material ordering.
How to Use This Calculator
- Enter tread depth, riser height, stair width, and number of steps.
- Set the waste factor percentage (10% is standard for carpet).
- Review total coverage area, square yards for carpet orders, and tread vs. riser breakdown.
Why Accurate Carpet/Flooring Calculations Matter
Carpet is sold by the square yard, while vinyl and tile are sold by the square foot. Stair carpet installation also requires extra material for wrapping around nosings and tucking into crotches. A 10 to 15 percent waste factor accounts for cutting losses and pattern matching.
Common Carpet/Flooring Mistakes to Avoid
- Forgetting the nosing wrap allowance. Stair carpet has to wrap around the front edge of each tread and tuck into the crotch where the tread meets the riser, which uses noticeably more material than a flat area calculation suggests.