Panel estimate
How many boards fit on a panel of a given size, with a gap between boards and rails along two edges, in both orientations.
Inputs
Use a dot or a comma for decimals.
Results
- Best layout
- 12Board as drawn
- Usable size inside the rails
- 100 × 90mm
- Board grid, with gaps
- 94 × 86mm
Board as drawn
- 12 boards
- 3 × 4
- Board area used
- 7,200mm²
- Share of the panel
- 72%
Board turned 90°
- 8 boards
- 4 × 2
- Board area used
- 4,800mm²
- Share of the panel
- 48%
The formula
columns = ⌊(U + g) ÷ (w + g)⌋ rows = ⌊(V + g) ÷ (h + g)⌋
U and V are the panel's width and height after the rails are taken off, w and h the board's, g the gap between boards. The boards are counted with the board as drawn and turned by 90°; the better count is shown. Used area is the count times w × h.
Where the formula holds
A plain grid of identical boards, all in one orientation. It does not place fiducials, tooling holes, tabs or V-cut lines and does not mix orientations. Breaking the boards apart needs a gap (about 2 mm for a router) or none (for V-cut); the panel sizes and rail widths the line accepts come from the factory, not from this page.
Source: Plain geometry; see the panelisation guide for the parts of a panel. Calculated in your browser. Nothing is sent to a server.