Field Calculators

Flooring calculator

13 boxes260.00 SF in the boxes
Floor area
252.00 SF
Boxes
13 boxes (260 SF)
Underlayment rolls
3 rolls

These sketches are here to help you order material and price the work quickly. They are not engineered or shop drawings — always build from your approved project drawings.

Use the SF printed on the box — it varies by product. Set underlayment to 0 if it's attached to the planks.

Adjust▾
Show the math▾
  1. Area
    length × width
    18' 0" × 14' 0" = 252.00 SF
  2. Boxes
    SF ÷ SF per box, rounded up
    252.00 SF ÷ 20 SF = 13
  3. Underlayment rolls
    SF ÷ SF per roll, rounded up
    252.00 SF ÷ 100 SF = 3

Where the numbers come from

  • Boxes: Floor SF ÷ SF per box (from the box label), rounded up to whole boxesLaminate, vinyl plank, engineered and solid wood are all sold by the box, and the coverage printed on the box is the number to use — it varies by product. Cuts at walls, closets and doorways, and patterns like herringbone or diagonal, are not included: enter waste for those.
  • Carpet: Strips = width across ÷ roll width, rounded up · carpet = strips × run length × roll width ÷ 9 = SYBroadloom comes off the roll in fixed widths (12' is the most common in homes; 13'6" and 15' also exist), so a room wider than the roll needs a second full-width strip and a seam — you pay for the whole strip even if part of it is cut off. The floor SY (SF ÷ 9) is shown for comparison. Pile direction, pattern match and closets can need more; the installer's seam plan is the final word.

Saved results

Nothing saved yet. Tap Save to keep a result on this device.

Boxes of laminate, vinyl plank or wood flooring — or carpet off the roll, with strips and seams.