What is the Box Dieline Generator?
A dieline is the flat outline of a box used by printers and die-makers, showing where to cut and where to fold. The box dieline generator draws an accurate RSC (regular slotted carton) dieline from your inside dimensions, with cut lines, fold lines and the glue flap, ready to download as SVG.
Open the SVG in Illustrator, Inkscape or Canva to add your artwork. For the sheet size and yield use the Cardboard Sheet Calculator; for a simple cuboid net for school, try the Box Net Generator.
How to use the Box Dieline Generator
- Enter length, width and height (inside).
- Set the glue flap and board thickness.
- Preview the dieline.
- Download the SVG or print it.
Example
A 25 × 15 × 10 cm box produces a dieline of about 83.5 × 25 cm with four panels, a 3.5 cm glue flap and 7.5 cm flaps top and bottom.
Line types
Always ask your printer for their own allowances before final production.
- Solid lines: cut
- Dashed lines: fold (crease)
- Glue flap: joins the box side
Related packaging and shipping tools
Packaging decisions are connected: the box size sets the volumetric weight, which sets the courier bill, and the carton size decides how many fit on a pallet or in a container. These related calculators help with the next step:
- Box size calculator: inside and outside box dimensions.
- Box volume calculator: volume in cm³, litres, CBM and ft³.
- Box weight calculator: empty carton weight from GSM.
- Corrugated box calculator: GSM and BCT strength.
- Cardboard sheet calculator: RSC blank size and sheet yield.
Frequently asked questions
What is a dieline?
A flat template showing cut and fold lines for a box.
Which file format is provided?
SVG, which opens in most design programs.
Can I add my own design?
Yes, open the SVG in Illustrator, Inkscape or Canva.
Is it to scale?
Yes, the SVG is drawn at real size in millimetres.
Which box style is it?
A regular slotted carton (RSC).
Is the Box Dieline Generator free to use?
Yes. The Box Dieline Generator on Custom Converter is completely free, with no sign-up, no daily limit and no watermark.
Does the Box Dieline Generator work on mobile phones?
Yes. It is built mobile-first and works on Android phones, iPhones, tablets and computers in any modern browser, with no app to install.