This laminate flooring calculator shows exactly how many boxes you need.
Free laminate flooring calculator purpose-built for shopping. Enter room dimensions (feet or metres), plank length and width (inches), planks per box, and a waste factor to see total square footage, number of boxes, individual plank count, and optional cost estimate. Includes common plank size reference and waste factor guide for straight, diagonal, and herringbone installs.
Laminate Flooring Calculator
Planks, boxes, and cost for your laminate project
How the Laminate Flooring Calculator Works
This tool turns your room dimensions and plank size into the exact number of boxes to buy, adding a waste factor for cutting losses that varies by installation pattern.
Formula: Room area (sq ft) = Room Length × Room Width. Total with waste = Room area × (1 + Waste Factor). Plank area (sq ft) = (Plank Length × Plank Width) ÷ 144. Box coverage (sq ft) = Plank area × Planks per Box. Boxes needed = ROUND UP (Total with waste ÷ Box coverage). Total planks = ROUND UP (Total with waste ÷ Plank area).
- Room Length & Width — entered in feet or metres (metres are converted to feet internally)
- Plank Length & Width — the individual plank’s dimensions in inches (defaults 48 in × 7.5 in)
- Planks per Box — how many planks come in a single box (default 8)
- Waste Factor — a preset percentage from 5% (simple rectangular room) to 20% (herringbone/complex)
- Price per Box (optional) — used to calculate an estimated total material cost
Example Scenarios
| Room Size | Plank Size (L×W, in) | Planks/Box | Waste Factor | Boxes Needed |
|---|---|---|---|---|
| 15 ft × 12 ft | 48 × 7.5 | 8 | 10% | 10 |
| 10 ft × 10 ft | 48 × 5 | 10 | 10% | 7 |
| 20 ft × 15 ft | 48 × 7.5 | 8 | 15% | 18 |
| 4 m × 3 m | 48 × 7.5 | 8 | 10% | 8 |
| 8 ft × 6 ft | 54 × 7 | 6 | 20% | 4 |
Measuring Tips for an Accurate Laminate Flooring Calculator Result
A laminate flooring calculator turns area into boxes, so the tape measure matters more than the maths.
- Split odd shapes. Measure an L-shaped room as two rectangles, add the areas, and enter the total in the laminate flooring calculator.
- Include closets, alcoves and the space under doorways; skip only permanent fixtures such as kitchen islands.
- Raise the waste factor for diagonal layouts, many corners or long runs of short offcuts.
- Use the box coverage printed on the pack rather than plank dimensions if the two disagree.
Buy all boxes at once so they come from the same batch, since colour can shift between runs. Keeping one spare box for future repairs is sensible, even if the laminate flooring calculator says you are covered.
Remember that underlayment, trim and transition strips are separate purchases the laminate flooring calculator does not count. Follow the manufacturer’s acclimation and expansion-gap instructions too. The laminate flooring article on Wikipedia covers how the product is built, useful context before you rely on a laminate flooring calculator estimate.
Laminate Flooring Calculator FAQ
What waste factor should I choose for my installation pattern?
Use 5% for a simple rectangular room with straight laying, 10% (the recommended default) for most standard installs, 15% for diagonal cuts or L-shaped rooms, and 20% for herringbone or otherwise complex patterns that generate more offcuts.Why do I need extra planks beyond my room’s exact square footage?
Cutting planks to fit around walls, doorways, and room edges always wastes material, and staggered plank patterns typically leave unusable end-cuts. The waste factor builds this cutting loss into your total so you don’t run short mid-install.How do I find the planks-per-box figure for my specific product?
Check the box label or the product listing from your flooring supplier — planks per box varies by manufacturer and plank size, and the default value of 8 in this calculator is only a placeholder until you enter your product’s actual figure.Can I mix room dimensions in feet and metres?
Yes — each room dimension has its own unit selector, so you can enter Length in metres and Width in feet (or vice versa) and the calculator converts metres to feet internally before computing area.Does the calculator account for closets, doorways, or irregular room shapes?
Not directly — it multiplies one length by one width to get a simple rectangular area. For an irregular room, measure and sum the area of each rectangular section separately, then enter the combined total as your room dimensions.How much should I budget if I don’t know the price per box yet?
Leave the Price per Box field blank — the calculator will still show the boxes and planks needed without a cost estimate. Add a price once you’ve picked a specific product to see the total material cost.Related Calculators
Not sure of your room’s exact dimensions yet? Start with the square footage calculator. If you’re deciding between flooring materials, compare against the tile quantity calculator, or plan the walls to match with the paint quantity calculator.