Flooring Calculator
Floor area, boxes of tiles or planks and cost, with a wastage allowance. Results update as you type.
Enter your details
Results
Fill in the details above and the results appear here.
About the Flooring Calculator
Calculate how much flooring to buy for a room: tiles, laminate, vinyl or planks. Enter the room size, any extra area such as an alcove, a wastage allowance and the coverage of one box, and the calculator tells you how many boxes to order and what they will cost.
Metric and imperial units are supported.
Choose your currency (₹, $, €, £ and more) and every amount updates. The calculation runs in your browser, so the numbers you enter are not uploaded.
Flooring Calculator example
Room length: 5.5
Room width: 4
Extra area, e.g. an alcove: 1.2
Wastage allowance: 10 %
Coverage per box or pack: 2.2
Price per m² / ft²: 1100Flooring to buy: 26.4 m²
Floor area: 23.2 m²
Wastage allowance: 2.32 m²
Boxes needed: 12
Left over after fitting: 3.2 m²
Estimated cost: ₹29,040How it is calculated
The floor area is length × width plus any extra area. Wastage is added on top because of cuts and breakage, and the total is divided by the coverage of one box and rounded up to whole boxes. Cost is the area you actually buy times the price per unit area.
Floor area = length × width (+ extra area)Area to buy = floor area × (1 + wastage ÷ 100)Boxes = area to buy ÷ coverage per box, rounded upCost = area bought × price per unit area
What to enter
- Wastage allowance. Blank = 10%. Use 15% for diagonal or herringbone layouts.
- Coverage per box or pack. Printed on the box.
Assumptions and limits
Subfloor prep, underlay, skirting and adhesive are not included.
How to use the Flooring Calculator
- Fill in the fields above. Required fields are marked, optional ones can be left blank and fall back to the defaults described on this page.
- Use “Try an example” to see a worked case, then replace the numbers with your own.
- Read the results as you type. The large card is the main answer and the smaller cards are the related figures.
- Copy a single value or everything, or share a link that keeps your inputs.
Flooring Calculator FAQ
How does the flooring calculator work?
The floor area is length × width plus any extra area. Wastage is added on top because of cuts and breakage, and the total is divided by the coverage of one box and rounded up to whole boxes. Cost is the area you actually buy times the price per unit area.
How much wastage should I allow?
About 10% suits straight layouts. Diagonal patterns, herringbone and rooms with many corners usually need 15% or more. Large-format tiles can need extra too.
Why round up to whole boxes?
Flooring is sold in full boxes, and buying slightly more is safer than running short, since batches can vary in colour.
Is this flooring calculator free and private?
Yes. It is free with no sign-up, and the calculation happens on your device, so your numbers are never sent to a server.
More home & household calculators
Wallpaper Roll CalculatorRoom Volume CalculatorElectricity Bill EstimatorWater Consumption CalculatorMoving Cost Estimator
All home & household calculators → · All everyday calculators →