Hardwood & Luxury Vinyl Plank Flooring Calculator

Calculate net and gross square footage, recommended waste factors (7% straight, 10% diagonal, 15% herringbone), total cartons/boxes needed, underlayment rolls, and perimeter transition moldings for hardwood, laminate, or LVP installations.

Room Dimensions & Layout

Room Length (Feet)

Room Width (Feet)

Additional Closets / Hallways (sq ft)

Fireplace / Island Deductions (sq ft)

Flooring Type & Carton Details

Installation Pattern & Waste Factor

Square Feet Per Box / Carton

Material Price ($/sq ft)

Transition Doorways (T-Mold / Reducer)

Preset Flooring Projects

Total Boxes to Purchase 15 Full Boxes

15 Boxes (357.0 sq ft)

Net area: 315.0 sq ft | With 7% waste factor: 337.1 sq ft

Estimated Material Cost

$1,388.73

$92.58 per box @ $3.89/sq ft

Underlayment Rolls (100 sq ft)

4 Rolls

Acoustic dampening / vapor barrier

Trim & Perimeter Accessories

Quarter Round / Shoe Molding: 70 Linear Feet

Doorway Transition Strips (T-Mold): 2 Strips (72" standard)

Recommended Expansion Gap: 1/4" to 3/8" along all walls

Spare Leftover Planks (Attic Stock): ~19.9 sq ft for future repairs

Frequently Asked Questions

Can I return unopened boxes of flooring to the store?

Most home improvement retailers accept returns of unopened boxes within 30–90 days. However, professional flooring installers recommend retaining at least one full unopened box in your garage or attic. If a plank gets scratched or damaged by a plumbing leak years later, matching the dye lot and locking click mechanism will be nearly impossible.

Why is an expansion gap required around the perimeter of floating floors?

Luxury vinyl plank (LVP) and laminate floors expand and contract as room temperature and humidity fluctuate. Leaving a 1/4" to 3/8" gap between the floor and wall studs (concealed by baseboards or quarter round) prevents the floor from buckling, peaking at seams, or tenting in the center of the room.