Estimate flooring for one or multiple rooms, including exclusions, editable waste, whole boxes or pieces, leftover coverage, and optional material-only cost.
For a rectangular room, multiply length by width. Add each room separately for multi-room projects, or enter a known total area.
CalcRocket converts every measurement to square meters internally, subtracts excluded area, then applies waste once before purchase quantities are calculated.
area = length × width × quantitybase area = total room area − excluded arearecommended area = base area × (1 + waste % ÷ 100)boxes to buy = ceiling(recommended area ÷ coverage per box)leftover = whole-box purchased coverage − recommended areapieces to buy = ceiling(recommended area ÷ piece area)A 12 ft × 15 ft room is 180 ft². With 10% waste it needs 198 ft². At 22 ft² per box, exactly 9 boxes cover 198 ft².
Rooms of 180 ft² and 120 ft² total 300 ft². With 10% waste and 23.5 ft² boxes, buy 15 boxes; they cover 352.5 ft² and leave an estimated 22.5 ft².
A 5 m × 4 m room is 20 m². With 10% waste and 2.2 m² per box, buy 10 boxes.
Extra material can cover cuts, damaged pieces, pattern matching, and future repairs. The editable 10% default is not universally correct.
Enter the coverage printed on the exact product box; no universal coverage is assumed.
Split an irregular space into rectangles and add each rectangle as a separate room.
Optional piece dimensions estimate individual pieces. Mixed units are converted before multiplication. When pieces per box are provided, calculated box coverage is compared with the manufacturer value without replacing it.
The material-only estimate may use price per displayed area, box, or piece. It excludes labor, underlayment, adhesives, trim, transitions, delivery, taxes, removal, and subfloor repair.
Use the optional excluded-area field for spaces that truly will not receive flooring. The calculator never subtracts doorways or closets automatically.
Measure each rectangular area, subtract exclusions, and apply an appropriate waste allowance.
Multiply room length in feet by width in feet.
It depends on the material, layout, pattern, room shape, and repair plans; the calculator's 10% default is editable.
Divide recommended area by manufacturer coverage per box and round upward.
Yes. Add a row for each room or rectangular section.
Split it into rectangles and add their areas.
Subtract only areas that will not be floored, based on the actual project.
Recommended area is divided by the converted area of one piece and rounded upward.
It is the floor area the manufacturer says one box covers.
Partial boxes generally cannot be purchased, so the purchase quantity is rounded upward.
Recommended area is subtracted from the coverage of all whole boxes purchased.
No. It is a material-only estimate.