Flooring Calculator

Plan hardwood, laminate, vinyl plank, or engineered flooring by entering the room size, waste allowance, box coverage, and local costs.

22-calculator project library Reviewed 2026-07-25Calculations run privately in your browser

Enter project details

Example values are prefilled

Calculate flooring area, waste, boxes, underlayment, material cost, labor, and project totals.

Floor area = length × width. Order area = floor area × (1 + waste %). Boxes = order area ÷ coverage per box, rounded up.

Example: A 15 × 12 ft room is 180 sq ft. With 10% waste, order for 198 sq ft. If each box covers 22.5 sq ft, buy 9 boxes.

Irregular rooms, diagonal layouts, herringbone patterns, stairs, and damaged subfloors require extra material or labor.

How much waste should I add?

Straight layouts often use 7–10%; diagonal or patterned layouts commonly need more.

Should closets be included?

Include every area receiving the same flooring, including closets and connected alcoves.

Why round boxes up?

Flooring is sold in full cartons and extra matching material is useful for future repairs.