Flooring Calculator
Work out how much flooring to buy. Enter your room dimensions and a waste allowance to get the finished square footage, the material area to purchase, and an estimated cost.
Your project
Estimate
Flooring to buy · Includes waste allowance
- Finished area
- 180ft²
- Estimated material cost
- $891.00
Estimates are guidance only and exclude tax, labor, and site conditions unless stated. Confirm with a local pro.
How it's calculated
No black boxes — here is the exact math behind your estimate, so you can check it or adapt it for your own quote.
- 1
Finished area = length × width - 2
Flooring to buy = finished area × (1 + waste% ÷ 100) - 3
Cost = flooring to buy × price per ft²
Worked example
A 15 ft × 12 ft room with a 10% waste allowance.
Inputs
- Room length
- 15 ft
- Room width
- 12 ft
- Waste allowance
- 10 %
- Price per ft²
- 4.5 $/ft²
Result
- Flooring to buy
- 199 ft²
- Finished area
- 180 ft²
- Estimated material cost
- $891.00
Tools & materials for this project
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- Flooring underlayment Cushions and quiets floating laminate or vinyl plank.
- Flooring installation kit Tapping block, pull bar, and spacers for plank floors.
Compare local pros for flooring
An estimate gets you a budget. A few competing quotes get you the real price. Tell us about the job and we'll help you find vetted contractors nearby.
Flooring cost by state
The calculator does the quantity math exactly. What it can't know is what a fair unit price looks like where you live — flooring runs 61% more in the priciest US market than the cheapest.
Flooring cost in all 50 states + DC US average $8.00 per square foot installed · regional averages, full ranked table, and typical project totals.