Flooring Calculator: Boxes and Cost

Plan about 10 percent for straight, simple rooms, which is the field default. Bump it to 15 percent for diagonal layouts, herringbone or busy patterns, and rooms with many corners or closets, since angled cuts leave offcuts you often cannot reuse.

Flooring ships by the sealed box, not the individual plank, so a fractional box has to become the next whole one. The tool uses a ceiling that tolerates tiny floating-point drift, so a value that is really a round number is not nudged up by mistake.

No. Coverage per box is the usable square footage inside a sealed box. The waste percent is added on top of your room area to cover trimming, factory defects and pattern matching, so the two never overlap.

Split the floor into rectangles, calculate each area by multiplying its length and width, then add the areas together. Enter the combined square footage by using dimensions that multiply to that total, or measure the largest rectangle and add the rest in a second pass.

The fields are labelled in feet and square feet, so enter feet for the room and square feet for box coverage. If your box lists square meters, convert it to square feet first, since mixing units would throw the box count off.

The total is the number of boxes multiplied by the price per box, rounded to the nearest cent and shown in the currency you pick from the dropdown. Leave the price at zero to hide the total and just plan quantities.

Yes. Keeping one spare box is wise because dye lots shift between production runs, so an exact future match can be hard or impossible to source once your run sells out. The on-screen note reminds you to hold a spare.

The calculator needs non-negative room dimensions and a box coverage greater than zero. A blank field, a negative number or a zero coverage triggers the red message; fix the offending field and the estimate returns instantly.

No. The estimate runs entirely in your browser, so your room sizes and prices never leave your device and nothing is stored.