How this is calculated
Whether you're installing engineered hardwood, laminate, or luxury vinyl plank, our flooring estimator simplifies the process. The tool calculates your room's baseline footprint: Flooring Area = Room Length × Room Width. Flooring is rarely sold by the individual plank — it's sold in boxes. Once you get your total square footage (including a pre-calculated 10% waste buffer for cuts and planks that split during installation), simply divide the total by the square footage printed on your specific flooring box to know exactly how many boxes to buy.
FAQ
Industry experts recommend ordering 10% more flooring material than your actual room square footage. For complex layouts, diagonal patterns, or rooms with lots of closets and alcoves, increase that buffer to 15%. This covers mistakes, staggered board waste, and leaves matching planks for future repairs.
Underlayment is a thin layer of foam, felt, or cork placed between the subfloor and your new flooring. It provides moisture protection, cushions the walk, and absorbs sound. Many modern laminate and luxury vinyl planks come with underlayment pre-attached — if yours doesn't, purchase rolls separately.
Yes, but only if the existing floor is completely flat, solid, structural, and free of moisture. Floating floors like laminate and LVP can be installed over old sheet vinyl or ceramic tile. Never install solid hardwood or new vinyl over squeaky hardwood or plush carpeting.
Common Mistakes to Avoid
Installing straight out of the box without acclimating the flooring to the room for 48-72 hours — this is the #1 cause of gaps or buckling later.
Ignoring the manufacturer's recommended expansion gap around the room's perimeter.
Laying new flooring over an uneven subfloor instead of leveling it first.
Pro Tips
Stagger the seams between rows by at least 6 inches for both a stronger floor and a more natural look.
Keep one unopened box from the same dye lot for future repairs — matching lots later can be surprisingly hard.
Browse Calculators
Interior & Finishes
Structural & Masonry
Outdoor & Landscaping