Flooring Calculator
Boxes of flooring and cost.
Enter your values
Enter the room length in ft.
Enter the room width in ft.
Enter the coverage per box in sq ft.
Enter the waste allowance in %.
Enter the price per box in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Boxes to buy
- 11
- Area with waste
- 257.4 sq ft
- Room area
- 234 sq ft
- Total coverage bought
- 261.8 sq ft
- Estimated cost
- $528.00
Quick answer
Divide the room area plus waste by the coverage per box to get the number of boxes to buy.
At a glance
| What it does | Boxes of flooring and cost. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Room length, Room width, Coverage per box, Waste allowance, Price per box |
| Main output | Boxes to buy |
| Cost | Free — no sign-up, no download |
How to use the Flooring Calculator
- 1Measure the room length and width.
- 2Check coverage per box on the product page.
- 3Add 10% waste, or 15% for diagonal layouts.
Inputs explained
- Room length(ft)
- Enter the room length in ft.
- Room width(ft)
- Enter the room width in ft.
- Coverage per box(sq ft)
- Enter the coverage per box in sq ft.
- Waste allowance(%)
- Enter the waste allowance in %.
- Price per box($)
- Enter the price per box in $.
Worked example
Using the values the calculator loads with:
Inputs
- Room length18 ft
- Room width13 ft
- Coverage per box23.8 sq ft
- Waste allowance10 %
- Price per box48 $
Results
- Boxes to buy11
- Area with waste257.4 sq ft
- Room area234 sq ft
- Total coverage bought261.8 sq ft
- Estimated cost$528.00
Frequently asked questions
Why buy extra?
Cuts, defects and future repairs — keep at least one spare box.
Do I need underlay?
Most floating floors do, unless it is pre-attached.
What do I need to enter into the Flooring Calculator?
Just 5 values: room length, room width, coverage per box, waste allowance, price per box. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Flooring Calculator work out the answer?
Divide the room area plus waste by the coverage per box to get the number of boxes to buy. The working is shown step by step so you can verify the result by hand.
Is the Flooring Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.