Flooring Calculator
Calculate how much flooring material and how many boxes you need for a room, including waste.
About the Flooring Calculator
Whether it's laminate, hardwood, or vinyl plank, flooring material is sold by area coverage per box, and buying just the exact room area almost always leaves you short once cuts and waste are factored in. This calculator finds the adjusted material area needed and the number of boxes to purchase.
How It Works
The calculator multiplies room length by width to get the base area, adds your waste percentage on top, and if you provide a coverage-per-box figure from your flooring product, divides the adjusted area by that to find the number of boxes to buy, rounded up to a whole box.
Material Needed = Room Area × (1 + Waste%); Boxes Needed = ceil(Material Needed / Coverage per Box).
Example
Scenario: A 14ft × 11ft room with 10% waste, using flooring that covers 20 sq ft per box.
Result: 154 sq ft room area, adjusted to about 169.4 sq ft with waste, requiring 9 boxes.
Assumptions & Limitations
- 10% waste is a typical default allowance for straight-lay flooring installation; more complex layouts or rooms with many cuts may need more.
- Coverage per box varies by product — check your specific flooring's packaging for the exact figure.
- Does not account for flooring installed in multiple connected rooms with different waste needs at transitions — calculate each room separately for best accuracy.