Flooring Calculator
Use this flooring calculator to plan material quantities before buying laminate, LVP, hardwood, engineered wood, or carpet.
Flooring calculator
Adjust the values to estimate material quantity before buying.
Estimated result
Round up for ordering and keep a small project buffer.
- Room area
- 180 sq ft
- Area with waste
- 198 sq ft
- Boxes to buy
- 9 boxes
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How this estimate works
This calculator turns your project dimensions into a planning quantity, then applies a waste factor so the final number is closer to what you can actually order.
- Area = length x width
- Adjusted area = area x (1 + waste percentage)
- Boxes needed = adjusted area / square feet per box
Example
A 12 ft by 15 ft room with 10% waste needs 198 sq ft of flooring, or 9 boxes if each box covers 23 sq ft.
Common planning notes
- Irregular rooms should be split into rectangles and added together.
- Stairs, closets, hallways, and transitions need separate measurements.
- Keep spare material for repairs, especially for discontinued flooring.
Frequently asked questions
How much extra flooring should I buy?
Use 5% to 10% extra for simple layouts and 10% to 15% for angled layouts, plank patterns, or many cuts.
Can I use this calculator for carpet?
Yes for a rough square-foot estimate, but carpet roll width and seams may require a separate layout.
Do closets count in flooring measurements?
Yes. Measure closets, alcoves, and hallways separately, then add them to the main room area.