How Much Flooring Do I Need?
Add one room or multiple rooms to calculate total flooring needed. Includes waste factor for cuts and installation.
How to Calculate Flooring for a Room
Multiply the room length by the width to get square footage. Add a waste factor of 10% for standard installations, or 15% for diagonal layouts. For multiple rooms, calculate each one separately and add the totals.
Most flooring is sold by the square foot or in boxes that cover a certain area. Always check the box coverage before buying.
Flooring Waste Factor Guide
- 5% — Simple rectangular room, straight lay
- 10% — Standard — most rooms
- 15% — Diagonal install, L-shaped rooms, herringbone
Flooring Cost by Type (Installed, 2026)
| Flooring Type | Material Cost/sq ft | Installed Cost/sq ft |
|---|---|---|
| LVP / Luxury Vinyl Plank | $2–$7 | $4–$10 |
| Laminate | $1–$5 | $3–$8 |
| Engineered Hardwood | $3–$10 | $6–$14 |
| Solid Hardwood | $5–$15 | $8–$20 |
| Porcelain Tile | $2–$8 | $7–$15 |
| Carpet | $2–$8/sq yd | $5–$12/sq yd |
LVP (Luxury Vinyl Plank) is the most popular flooring choice in 2026 — it's waterproof, durable, affordable, and DIY-friendly. Hardwood adds home value but requires more maintenance and isn't suitable for moisture-prone areas. Tile is the most durable option for kitchens and bathrooms.
How to Buy Flooring Without Over-Ordering
Calculate each room separately, then add the totals before applying your waste factor. Buying boxes to cover all rooms combined — rather than room by room — usually means fewer leftover boxes because you're working with a larger base number. Most flooring manufacturers recommend ordering from a single production run (same box batch number) to avoid subtle color variation between lots.
If your flooring comes in boxes that cover a fixed square footage (common for LVP and laminate), divide your total adjusted square footage by the box coverage to get the number of boxes. Always round up — never order half a box short. The cost of a return trip to buy one more box, plus the risk of a different lot number, isn't worth the $40–$60 savings.