Smart Dieline Generator
Design custom boxes and export production-ready dielines.
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Style
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Size
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Material
4
Print
Dieline Legend
Cut Line
Fold Line
Safe Zone (3mm)
Technical Drawing v2.1
Mailer Box (REFT)
touch_app Drag to interact
Design custom boxes and export production-ready dielines.
A dieline is the flat blueprint a box is cut and folded from. Solid black lines are cuts, dashed blue lines are folds (creases the board bends along), and the brown panel is the glue tab — the flap where the box is joined. The flat blank size tells your printer how much board each box consumes and how many fit on a sheet, which is what actually drives your unit cost.
The dimensions you enter are internal, so the box fits your product. Real board has thickness, so this tool adds the caliper of your chosen flute or paperboard at the score lines when it reports the flat blank — fold a blank cut to raw internal numbers and it comes out slightly small.
Manufacturers refer to box styles by standard codes so a design means the same thing everywhere. The common ones:
Internal — the space your product sits in. The reported flat blank adds your board’s caliper so the finished box holds the size you asked for.
The SVG is editable vector and a solid proofing template. Confirm board grade, exact thickness allowances, bleed and tooling with your manufacturer before a production run — every plant has its own die specs.
A mailer (FEFCO 0427) has a hinged lid and front tuck and needs no tape — common for e-commerce and unboxing. An RSC (FEFCO 0201) is the classic taped shipping box, cheaper per unit for heavier or bulk shipping.
Send the exact spec you built — we manufacture it with low minimums.