How to use the Flooring Calculator
Enter the room length, room width, waste allowance and coverage per box and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
The formula
Area × (1 + waste) ÷ box coverage, rounded up (sq ft in US mode, m² in metric mode)
Examples
- With the default values
Room area: 180 sq ft With 10% waste: 198 sq ft Boxes needed (20 sq ft each): 10
- With room length set to 30
Room area: 360 sq ft With 10% waste: 396 sq ft Boxes needed (20 sq ft each): 20
Limitations and assumptions
Use 15% waste for diagonal layouts or patterns.
Frequently asked questions
What does the Flooring Calculator do?
Find how much flooring to buy, including a waste allowance and the number of boxes.
How does the Flooring Calculator work?
Enter the room length, room width, waste allowance and coverage per box and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
What formula does the Flooring Calculator use?
Area × (1 + waste) ÷ box coverage, rounded up (sq ft in US mode, m² in metric mode).
What should I keep in mind when using the Flooring Calculator?
Use 15% waste for diagonal layouts or patterns.
Can I see an example of the Flooring Calculator?
A 15 × 12 ft room needs 198 sq ft with 10% waste, or 10 boxes of 20 sq ft.
Is the Flooring Calculator free to use?
Yes. It is free, needs no account and runs in your browser.