10 Minute BidsFlooring calculatorSquare feet, waste and boxes.
Add each room's length and width, pick the flooring and enter what one box covers. You get the square feet with waste and the boxes to buy, rounded up.
Your estimate
—
| Floor arealength × width, every room | — |
|---|---|
| Waste | — |
| With waste | — |
| Boxesrounded up | — |
| You getboxes × box coverage | — |
| Square yards9 sq ft each | — |
| Orderrounded up | — |
How we got it
Skip the math — upload your plans. We measure it all on a 3D model of your house.
Priced per plan setFlooring bid, 3D model included
Upload your plansTypical waste, as a starting point: about 10% for straight-lay LVP, laminate, hardwood, tile and carpet, and 15% on a diagonal or herringbone. Rooms with many corners, closets and doorways waste more. Keep a box for repairs.
This is an estimate from the numbers you enter. It doesn't see the subfloor: leveling, patching or moisture work, or rooms changed during construction. Stairs, base and transitions are extra. Confirm on site before you order.
The flooring formulas.
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Room area
Each room, length times width. Add the rooms.
area = length × width, for each room -
Waste
For cuts at walls, doorways and the ends of rows.
with waste = area × (1 + waste %) -
Boxes
What one box covers is printed on it.
boxes = with waste ÷ box coverage, rounded up -
Carpet
Carpet is sold by the square yard: 9 sq ft.
square yards = with waste ÷ 9
Worked exampleRooms of 12 × 14 ft and 10 × 11 ft are 168 + 110 = 278 sq ft. With 10% waste, 305.8 sq ft. With 20 sq ft boxes: 305.8 ÷ 20 = 15.29, so 16 boxes, 320 sq ft.
| Flooring | Waste | Sold by |
|---|---|---|
| LVP or laminate | 10% | box |
| Hardwood | 10% | box |
| Tile, straight lay | 10% | box |
| Diagonal or herringbone | 15% | box |
| Carpet | 10% | square yard |
Starting points for straight rooms. The job sets the real number.
Skip the math —upload your plans.
We build your floor plan in 3D from the plan set and measure every room's net square feet by material, base and shoe by the wall run, transitions at each door, and the stairs. You spend about 10 minutes checking it against your plans.
Priced per plan setFlooring bid, 3D model included
Or see what’s in a flooring bid.
Flooring questions.
How do I calculate flooring square footage?
Multiply each room's length by its width, then add the rooms. A 12 × 14 ft room is 168 square feet. Split an L-shaped room into two rectangles.
How much extra flooring should I buy?
Typical waste is about 10% for straight-lay LVP, laminate, hardwood, tile and carpet, and 15% on a diagonal or herringbone. Buy a little more for rooms with many corners and closets, and keep a box for repairs.
How many boxes of flooring do I need?
Divide the square feet with waste by what one box covers, and round up. 305.8 square feet with 20 square-foot boxes is 15.29, so 16 boxes.
How is carpet sold?
By the square yard, which is 9 square feet, cut from rolls usually 12 ft wide. Seams and the roll width set the real waste, so the flat 10% here is a starting point.
Is this an exact flooring order?
No. It's an estimate from the sizes you enter. Stairs, closets you left out, base and transitions are extra, and subfloor work isn't in it. Confirm on site before you order.