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From room size to whole boxes

Hardwood flooring calculator

Turn room measurements into a hardwood flooring order. Add separate floor sections, set your waste allowance, and use the coverage printed on your chosen box.

METRIC + US UNITS

Size up your floor.

YOUR ROOMS
Measurement system

Rooms or floor sections

Split an L-shaped room into rectangles without counting the same area twice. Up to 30 sections.

Adjust for your installation pattern and the manufacturer’s instructions.
Use the area printed on your chosen flooring box.

Switching units converts your current dimensions and box coverage. Check the coverage of the actual box you plan to buy.

Your flooring plan

ESTIMATED
Calculate a plan
The example will calculate when JavaScript is enabled.
Floor area—
Added waste allowance—
Area including waste—
Coverage per box—
Total box coverage—
Box rounding above the estimate—

An area estimate for one flooring product. Box coverage, cutting waste, and spare boards all matter. Underlay, trim, adhesive, labor, and cost are not included.

Results reflect the last successful calculation. Recalculate after editing inputs.

Calculated with TinkerMint · An estimate based on the inputs shown.

How to estimate hardwood flooring

  1. Choose metric or US units, then measure the length and width of each area that will receive the same flooring.
  2. Use Add room for extra spaces. Break irregular rooms into rectangles and count each area once.
  3. Enter a waste percentage suited to your layout and the coverage per box. The default 10% is an example, not a universal recommendation.
  4. Choose Plan my flooring to update the result. Reset example restores the 4 m × 3 m room and its original settings.

A little extra, thoughtfully.

Waste varies with room shape, board layout, installation pattern, and the manufacturer’s requirements. The 10% default is only an example; it is not a recommendation for every floor. Check how much spare flooring you want for future repairs too.

Use only the area to receive this flooring. For irregular spaces, measure separate rectangles and avoid overlaps.

How the boxes add up.

Total floor area = sum of each length × width. Add the chosen waste percentage, divide by coverage per box, then round up to whole boxes.

The default exampleA 4 m × 3 m room is 12 m². With 10% waste, allow 13.2 m². At 2 m² per box, that means 7 boxes covering 14 m².

A few things worth checking.

What is the difference between waste and box rounding?

Waste is the extra area you choose to allow for cuts and offcuts. Box rounding is the additional coverage needed to buy whole boxes; it is shown separately so you can see both margins.

Can I combine different flooring products?

Make a separate plan for each product or box coverage. This calculator uses one coverage value and does not optimize a mix of box sizes or calculate installation cost.