Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Cuts, breakage, and mistakes. 10% is standard.
Result
Boxes to order
21
Material cost
$1,302
Labour cost
$1,260
Total installed cost
$2,562
All-in per sq ft
$6.10
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter room area (sq ft).
- 2Enter coverage per box (sq ft).
- 3Enter price per box ($).
- 4Enter installation labour ($/sq ft).
- 5Enter waste allowance (%) — Cuts, breakage, and mistakes. 10% is standard..
- 6Read your boxes to order on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Flooring is sold by the box, and you cannot buy a partial one. Order at least 10% over for cuts — 15% if you are running planks diagonally or the room has lots of jogs.
Worked example
Using the values the calculator loads with:
Inputs
- Room area: 420 sq ft
- Coverage per box: 22.5 sq ft
- Price per box: 62 $
- Installation labour: 3 $/sq ft
- Waste allowance: 10 %
Results
- Boxes to order: 21
- Material cost: $1,302.00
- Labour cost: $1,260.00
- Total installed cost: $2,562.00
- All-in per sq ft: $6.10
What each field means
Inputs
- Room area (sq ft)
- The room area used in the calculation, measured in sq ft. Starts at 420 sq ft so you have a working example on load.
- Coverage per box (sq ft)
- The coverage per box used in the calculation, measured in sq ft. Starts at 22.5 sq ft so you have a working example on load.
- Price per box ($)
- The price per box used in the calculation, measured in $. Starts at 62 $ so you have a working example on load.
- Installation labour ($/sq ft)
- The installation labour used in the calculation, measured in $/sq ft. Starts at 3 $/sq ft so you have a working example on load.
- Waste allowance (%)
- Cuts, breakage, and mistakes. 10% is standard.
Results
- Boxes to order
- Returned as a whole number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Material cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Labour cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total installed cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- All-in per sq ft
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the flooring calculator work?
Flooring is sold by the box, and you cannot buy a partial one. Order at least 10% over for cuts — 15% if you are running planks diagonally or the room has lots of jogs. The underlying maths is: Boxes = Area × (1 + waste) ÷ Coverage per box, rounded up.
What do I need to enter?
5 values: room area, coverage per box, price per box, installation labour, and waste allowance. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the boxes to order result mean?
It is returned as a whole number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Flooring Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/flooring
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/flooring" target="_blank" rel="noopener">Flooring Calculator — RevenueLab</a> (2026).</p>
Source: [Flooring Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/flooring) (2026).