Each board is assumed to intersect supports at both ends and at intervals no larger than the entered spacing. Enter fasteners per intersection according to the chosen fastening system. Reserve and whole-pack rounding are separate. This model does not select structurally safe support spacing or account for double supports at butt joints.
Worked reference example
Illustrative inputs in metres and SI units; the price is an example entered by the user, not a market quotation. Numeric reference verified by the automated test suite.
- Length
- 4
- Quantity
- 10
- Maximum spacing
- 0.4
- Fasteners at each intersection
- 2
- Allowance
- 10
- Pieces per pack
- 10
- Price per purchase unit
- 2
- Result
- 25
- Cost (example currency units)
- 50
Calculation method
n = ceil(nᵦ × (ceil(L/s) + 1) × f × (1 + r/100)); N = ceil(n / nₚ)Measure. Calculate. Build.
- Use actual dimensions and split complex rooms into rectangles.
- Allow for cuts, joints and package sizes. Compare stock formats.
- Combine your results in a shopping list you can save and print.
Sources & limits
Planning estimates; verify measurements and product data before purchasing.
Prices are supplied by you. Area estimates do not establish a feasible cutting arrangement. These tools do not assess structural loads or issue construction approvals.