Laminate Flooring Calculator
To floor a 12 × 14 ft room with laminate you need about 181.44 sq ft with standard 8% waste — roughly 10 boxes (about 80 planks).
Reviewed by The ponderloop teamUpdated 2026-07-11How we calculate
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How this number is calculated
0 sq ft (no waste added) ÷ 20 sq ft per box = 0 boxes
Shopping list
- Laminate flooring underlayment
- Flooring spacers (1/4 inch)
- Flooring tapping block
- Flooring pull bar
- Laminate flooring cutter
- Laminate flooring transition strips
Set room and tile dimensions to see the layout preview.
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Methodology & assumptions
We compute room area as length × width in feet, subtract any doorway or fixture deductions you enter, then add your chosen waste percentage (8% standard, 12% diagonal) to cover trimming and cutting mistakes. The result is divided by the box coverage (about 20 sq ft per box) and rounded up to the next whole box.
- Typical US retail price range for laminate flooring, 2026
- Manufacturer box coverage specifications
Worked examples
| Room | Result |
|---|---|
| 10 × 12 ft room, standard layout | 120 sq ft + 8% waste ≈ 129.6 sq ft → 7 boxes |
| 12 × 14 ft room, standard layout | 168 sq ft + 8% waste ≈ 181.44 sq ft → 10 boxes |
| 15 × 20 ft room, diagonal layout | 300 sq ft + 12% waste ≈ 336 sq ft → 17 boxes |
Frequently asked questions
- How many boxes of laminate flooring do I need?
- Multiply the room length by width in feet to get the square footage, subtract any doorways or fixed openings, then add 8% for a standard straight layout or 12% for a diagonal layout. Divide by the coverage per box (usually about 20 sq ft) and round up.
- Why do I need to add 5-10% extra for waste?
- Laminate planks get trimmed to fit at walls, doorways, and around fixtures, and some planks will have cutting mistakes or minor damage. Industry guidance is 5-10% extra for a standard straight layout, and more (10-15%) for diagonal or angled layouts where cuts are less efficient.
- Do I need underlayment under laminate flooring?
- Almost always, yes. Underlayment cushions the floor, dampens sound, and smooths out minor subfloor imperfections. Some laminate planks come with underlayment pre-attached — check the product spec before buying a separate roll.
- How many planks come in a box of laminate flooring?
- It varies by plank size and brand, but a typical box holds about 8 planks and covers roughly 20 sq ft. Check the box label for the exact coverage of the product you are buying.