Laminate Flooring Calculator
Calculate how many boxes of laminate, hardwood or vinyl plank flooring you need — with waste allowance included.
What this calculates
Calculates the net room area, area with waste allowance and total number of boxes needed for laminate, engineered hardwood, luxury vinyl plank (LVP) or any click-lock flooring system.
Formula used
Area = length × width. Area with waste = area × (1 + waste %). Boxes = area with waste ÷ m² per box (rounded up).
Worked example
A room of 4 m × 3 m = 12 m². With 10% waste: 13.2 m². If each box covers 2.2 m², you need 6 boxes (ceil(13.2 / 2.2) = 6).
Waste by installation type
Straight lay: 10%. Diagonal (45°): 15%. Herringbone pattern: 15–20%. Rooms with many doorways or alcoves: add 2–5% extra. Always buy from the same production batch.
When not to use this calculator
For L-shaped or highly irregular rooms, divide the space into rectangles and calculate each separately, then sum the boxes.
Frequently asked questions
How many boxes of laminate do I need?
Area × (1 + waste%) ÷ m² per box, rounded up. Check the box label for exact coverage.
What waste percentage should I use?
10% for straight lay, 15% for diagonal. Add more for complex room shapes.
How many m² per box?
Typically 1.8–2.5 m². Check the product label for the exact figure and enter it above.
Does laminate need underlay?
Yes. Most click-lock flooring requires a foam or cork underlay. Some products have it pre-attached — check the installation guide.
Assumptions
- Boxes are rounded up to the nearest whole box.
- Waste is applied to the net floor area.
- Does not include underlay, adhesive or transition strips.
- Valid for simple rectangular rooms.
Always let laminate flooring acclimate in the room for 48 hours before installation. Maintain a 10–12 mm expansion gap around the perimeter.
Common mistakes
- Buying boxes from different production lots (color mismatch).
- Not allowing for acclimatization before installation.
- Forgetting expansion gaps at walls and door frames.