Square Footage Calculator - Room & Flooring Area (Sq Ft) (2026)
Calculate the square footage (sq ft) of any room, floor, or wall. Includes automatic 10% material waste allowance and total project cost estimates.
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⚙️ Configuration & Inputs
ft
ft
$
📊 Results & Analysis
Total Material Needed
198 sq ft
Estimated Material Cost: $891.00
| Base Floor Area | 180.0 sq ft |
| Waste Allowance (+10%) | 18.0 sq ft |
| Total Square Yards | 22.0 sq yd |
| Estimated Material Total | $891.00 |
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How to Calculate Square Footage
Square footage measures two-dimensional surface area. For a rectangular room, multiply length by width in feet: Area = Length × Width. Always add 10% to 15% extra material to account for off-cuts, damaged tiles, and pattern alignment.
Frequently Asked Questions
When installing hardwood, laminate, or tile, pieces must be cut at room perimeters. Unusable scrap pieces require purchasing 10% to 15% more material than the exact floor dimensions.