Hardwood Flooring Calculator
Estimate total planks, boxes, and coverage for any room — with waste factor.
Results update instantly as you type.
Interactive Floor Layout
Visualization of plank layout in your room.
How Do I Calculate How Much Hardwood Flooring I Need?
Multiply room length × width to get total area in square feet. Divide by one plank’s area to find the number of planks. Add 10–15% for waste from cuts and fitting.
Planks = ⌈(Room Area × (1 + Waste%)) ÷ Plank Area⌉
How Much Waste Should I Add for Hardwood Flooring?
| Layout Pattern | Waste % | Best For |
|---|---|---|
| Straight / Running Bond | 10% | Simple rectangular rooms |
| Rooms with Angles | 15% | L-shaped rooms, closets |
| Diagonal | 15–20% | Diagonal plank layout |
| Herringbone / Chevron | 20–25% | Complex pattern layouts |
What Are Common Hardwood Flooring Plank Sizes?
| Plank Width | Common Lengths | Style |
|---|---|---|
| 2¼″ | 12–84 in (random) | Traditional strip |
| 3¼″ | 12–84 in (random) | Standard plank |
| 5″ | 12–72 in (random) | Wide plank |
| 7″+ | 48–84 in | Extra-wide plank |
Frequently Asked Questions
How many square feet are in a box of hardwood flooring?
Most boxes of hardwood flooring cover 20 to 25 square feet. Engineered hardwood boxes typically cover 22–30 sq ft. Always check the box label for exact coverage — it varies by manufacturer and plank size.
How do I calculate hardwood flooring for multiple rooms?
Calculate the area of each room separately, then add all areas together. Include closets, hallways, and any connected spaces. Apply the waste percentage to the total combined area.
Should I order extra boxes of flooring?
Yes — always order 1–2 extra boxes beyond the calculated amount. This covers defective planks, future repairs, and ensures matching from the same dye lot. Flooring colors can vary between production batches.
Plan Your Flooring Project
Accurate plank and box estimates — know exactly what to order before installation day.
Calculate Flooring →