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The Insert / Outsert Size Calculator converts folded panel dimensions into the final flat sheet size needed for printing, accounting for panels across the sheet, stacked number-up groups, headers, footers, trim additions and reductions.

Folded → Flat (default): you enter the folded panel size and the calculator returns the flat sheet size.

Flat → Folded: you enter the flat sheet size and the calculator inverts the math to give the folded panel size.

Switch between mm and inch in the top right of the Inputs card. Existing values are converted automatically. Flat width and height are rounded to 0 decimals for mm and 2 decimals for inches.

• FW / FH — final folded panel width and height.
• PW / PH — panels across width and height on the flat sheet.
• NU — number-up: how many times the same panel is stacked vertically inside a group.
• SU — spacing between stacked panels (shown only when NU > 1).
• HH / FT — header and footer height added to every column.
• RW / RH — width and height reduction (e.g. glue flap).
• AW / AH — trim additions in width and height.

Flat width = (FW × PW) − RW + AW

Flat height = PH × (FH × NU + SU × (NU − 1) + HH + FT) − RH + AH

Terms with value 0 are hidden in the on-screen formula.

Choose a grain direction to draw an arrow next to the flat preview. Pick a front panel to highlight that panel on the flat-size thumbnail.

The Save shape button below the flat-size preview writes two files:

• A PNG thumbnail of the flat preview in your configured PNG folder.
• A shape XML file in your configured XML hot folder, used by downstream production software.

Both files are named after the generated OtherSoftwareID (e.g. FW448FH23PW1PH10), built from non-zero dimensions. Configure the folders and Product Group via the settings popover next to the Save button.

The design name is generated automatically from the entered values using the pattern:

[PW]*[PH] panels ([PW] x [PH]) [unit] ([NU]-up) → [flat W] x [flat H] [unit] flat