Flooring calculator
Calculate flooring area, waste allowance, whole boxes to purchase, and material cost.
Flooring calculator
Estimate material area, whole boxes, and a budget.
Material estimate only. Confirm pack sizes, minimum orders, local prices, and project requirements before buying. Prices exclude delivery and taxes.
How to use the flooring calculator
- Choose metric or imperial units and enter the length and width of one rectangular floor area.
- Set a waste percentage appropriate to the installation pattern and product instructions. Enter the coverage of one complete box in square metres or square feet.
- Optionally select the supplier currency and enter the price per box, not the price per individual plank or unit of floor area.
- Click Calculate flooring. Review the actual floor area, area including waste, whole-box count, purchased area, and cost before confirming the order.
Frequently asked questions
Practical answers for this calculator. Select a question to read more.
What waste percentage should I use?
The default 10% is only a planning assumption. Diagonal layouts, patterned installation, small rooms, obstructions, and product matching can change the amount of cutting and spare material needed. Follow the flooring manufacturer’s or installer’s guidance.
Why is purchased area larger than the area including waste?
The calculator rounds up to complete boxes. For example, 13.2 m² required at 2 m² per box means 7 boxes, covering 14 m². The extra 0.8 m² comes from package rounding, not another waste percentage.
My supplier quotes a price per square metre. Can I enter it directly?
No. The cost field expects a price per box. Multiply the quoted price per square metre by the coverage of one box to obtain a box price, provided the supplier actually prices that way and no separate pack charges apply. Use square feet consistently for an imperial quote.
Can I use this for several rooms or an L-shaped floor?
The tool accepts one rectangle. Measure non-overlapping rectangles for more complex spaces, then combine their areas and apply suitable waste. If buying the same flooring for several rooms, rounding each room to boxes separately can overestimate the combined purchase; total the material requirement before final package rounding.
Does the cost include underlay, adhesive, trim, or installation?
No. Cost is whole boxes multiplied by your entered box price. Underlay, adhesive, trim, floor preparation, installation, delivery, and taxes need separate allowances. The calculator also does not evaluate subfloor condition or product suitability.
For more detail, read our methodology and disclaimer. Found a problem? Contact CalHomeGo.
Calculations run in your browser. Optional currency conversion contacts Frankfurter for rates; your measurements and cost amounts are not sent. Reference rates are not bank quotes.