Calculator Form
Example Data Table
| Case | Room Size | Board Size | Gap | Waste | Estimated Boards | Estimated Cost |
|---|---|---|---|---|---|---|
| Living Room | 6 m × 4 m | 2.4 m × 0.15 m | 0.005 m | 10% | 86 | 1032 |
| Hallway | 8 m × 3.5 m | 3 m × 0.14 m | 0.004 m | 8% | 67 | 871 |
| Studio Floor | 5 m × 5 m | 2.2 m × 0.12 m | 0.006 m | 12% | 115 | 1495 |
Formula Used
This calculator applies a board-count method and compares two possible layout directions.
- Room Area: Room Length × Room Width
- Board Face Area: Board Length × Board Width
- Row Pitch: Board Width + Gap
- Rows Required: Ceiling((Cross Dimension + Gap) ÷ Row Pitch)
- Pieces Per Row: Ceiling(Run Dimension ÷ Board Length)
- Base Boards: Rows Required × Pieces Per Row
- Boards To Buy: Ceiling(Base Boards × (1 + Waste Percentage ÷ 100))
- Total Cost: Boards To Buy × Price Per Board
- Packs Needed: Ceiling(Boards To Buy ÷ Boards Per Pack)
- Coverage Efficiency: (Room Area ÷ Purchased Board Area) × 100
Auto Best Layout checks both directions and selects the result with fewer purchased boards. If both directions match, the calculator prefers the lower surplus area and then the lower cost.
How to Use This Calculator
- Enter the room length and room width.
- Enter the board length, board width, and the spacing gap.
- Choose the same unit for all dimensional inputs.
- Set waste percentage for cuts, trimming, and handling loss.
- Enter the price per board and boards available in one pack.
- Choose a fixed layout direction or let auto mode compare both.
- Press Calculate to show results below the header and above the form.
- Use the CSV or PDF buttons to export the result table.
FAQs
1. What does this calculator estimate?
It estimates room area, rows, pieces per row, boards to buy, packs needed, purchased coverage, surplus area, total linear meters, and estimated material cost.
2. Why is the board gap included?
The gap changes row pitch. A wider spacing means each row covers more width, which can reduce the number of rows, while still keeping board size unchanged.
3. Why can purchased area exceed room area?
Boards come in fixed sizes. Rounding whole boards upward and adding waste for cutting often produces extra material beyond the room’s exact mathematical area.
4. What does auto best layout mean?
It tests both board directions. Then it selects the option needing fewer purchased boards. If counts tie, it prefers lower surplus and then lower cost.
5. Can I use feet, inches, or millimeters?
Yes. Choose one input unit and keep every dimensional value in that same unit. The calculator converts all measurements internally to meters.
6. Does pack size change the board count?
No. Pack size does not change required boards. It only converts the final purchase quantity into a pack estimate for ordering convenience.
7. Are labor and fasteners included in total cost?
No. The cost output only multiplies boards to buy by price per board. Labor, adhesive, clips, screws, and taxes are not included.
8. When should I increase waste percentage?
Increase waste when your room has corners, cutouts, diagonal layouts, mixed board lengths, or installation patterns that create more offcuts than a simple rectangle.