Calculators / Flooring
Flooring Calculator
To calculate flooring, enter your room length and width; this tool returns the square footage, the number of boxes to buy, and a cost estimate. Most flooring boxes cover about 20 square feet.
Real math, not AI guesses.
You need
7 boxes
Estimated cost
~$462
- Floor area
- 120 sq ft
- With 10% waste
- 132 sq ft
- Boxes (20 sq ft each)
- 7
Estimate only — actual quantities and prices vary by region and supplier. Verify with a professional before purchasing. Default price is a national average (as of 2026-06); edit it to match your supplier.
How to calculate flooring
The formula: boxes = ceil( area × (1 + waste) ÷ box coverage )
- Measure the room length and width in feet.
- Multiply length × width to get the floor area in square feet.
- Add about 10% for cuts, pattern matching, and mistakes.
- Divide by the coverage per box (often 20 sq ft) and round up.
Prices shown are national averages (as of 2026-06) and vary by region, brand, and supplier. They are estimates, not quotes.
How much does flooring cost to install?
Flooring material runs from about $1–$2 per square foot for basic laminate or vinyl plank up to $5–$10+ for hardwood and tile. Installed by a pro, expect roughly $3–$7 per square foot for laminate and luxury vinyl, and $6–$14+ per square foot for hardwood or tile, including labor and underlayment. For a 12×10 room (120 sq ft), that is about $360–$1,700 installed depending on the material.
What drives the cost
- Material is the biggest swing — laminate and vinyl are far cheaper than hardwood, tile, or stone.
- Subfloor prep: leveling, removing old flooring, and moisture barriers add cost.
- Layout: diagonal, herringbone, and rooms with many cuts raise labor and waste.
- Stairs, closets, and small rooms cost more per square foot than open floors.
DIY vs. hiring a pro
Click-together laminate and luxury vinyl plank are the most DIY-friendly — many homeowners install them with basic tools. Glue-down hardwood and tile (with mortar and grout) are far less forgiving and are where most people hire out. Whatever the material, measure carefully and add 10% for waste, more for diagonal patterns. If you hire, get a few local quotes — installation can cost as much as the flooring itself.
Installed and labor figures are national-average ranges, not quotes — get a few local estimates for your project.
Flooring FAQ
How much flooring do I need for a 12×10 room?+
A 12 ft × 10 ft room is 120 square feet. With 10% waste that is about 132 sq ft — around 7 boxes if each box covers 20 sq ft.
How much extra flooring should I buy?+
Add 10% for straight layouts and up to 15–20% for diagonal or herringbone patterns and rooms with many cuts.
How much does it cost to install flooring in a 12×10 room?+
A 12×10 room is 120 sq ft. At $3–$7 per square foot installed for laminate or vinyl, that is about $360–$840; hardwood or tile can run $720–$1,700 or more.
Is flooring installation cheaper if you DIY?+
Click-lock laminate and vinyl plank can roughly halve the cost since labor is most of the price. Tile and glue-down hardwood are harder to DIY well, so the savings come with more risk of mistakes.