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🪵 Flooring Calculator
Calculate flooring planks, boxes, and cost for hardwood, laminate, vinyl, or carpet. Works for any room shape with waste allowance.
sq ft/box
pcs
Room Area
180
sq ft
Total (with waste)
198
sq ft
Boxes Needed
10
boxes
Total Planks
80
pcs
Room Area
16.7
m²
Estimated Cost
—
USD
How to Calculate Flooring Needed
Correctly estimating flooring materials prevents costly shortages and excessive leftovers.
Flooring Calculation Formula
Room Area = Length × Width
Total Needed = Room Area × (1 + Waste%)
Boxes = Total Needed ÷ Coverage per Box (round up)
Flooring Cost & Coverage Reference
| Type | Cost per Sq Ft | Sq Ft per Box | Lifespan |
|---|---|---|---|
| Solid Hardwood | $5–$12 | 20–25 | 25–100 years |
| Engineered Hardwood | $3–$10 | 20–25 | 20–40 years |
| Laminate | $1–$5 | 18–24 | 15–25 years |
| Vinyl Plank (LVP) | $2–$7 | 15–24 | 10–20 years |
| Carpet | $1–$4 | Sold by sq yd | 5–15 years |
| Bamboo | $3–$8 | 20–25 | 20–25 years |
Frequently Asked Questions
How much flooring do I need?
Measure room length × width for sq ft. Add 10% waste for standard rooms, 15% for diagonal layouts, 20% for complex shapes. Divide by box coverage and round up.
How many boxes of flooring do I need?
Divide total sq ft (with waste) by coverage per box. A 180 sq ft room at 10% waste = 198 sq ft. At 20 sq ft/box, you need 10 boxes.
How much does hardwood flooring cost?
Solid hardwood: $5-$12/sq ft. Engineered: $3-$10/sq ft. Installation adds $3-$8/sq ft for labor. Total: $8-$20/sq ft installed.
How much extra flooring should I buy?
10% for rectangular rooms, 15% for diagonal patterns, 20% for complex layouts. Always keep some extra for future repairs.
What is the cheapest flooring?
Sheet vinyl ($0.50-$2/sq ft) and laminate ($1-$5/sq ft) are cheapest. Vinyl plank ($2-$7/sq ft) offers the best value considering durability.
How to calculate for an L-shaped room?
Divide the L into two rectangles. Calculate each area separately, then add together. Use our calculator twice and sum the results.
How many planks in a box?
Typically 7-10 planks per box for hardwood/laminate (covering 20-25 sq ft). Larger planks have fewer pieces. Check the product label for exact counts.
How long does flooring installation take?
DIY click-lock laminate/vinyl: 1-2 days per room. Hardwood nail-down: 2-3 days. Carpet: typically same-day by professionals.