Free Box Dieline Generator

Use the free box dieline generator when you already know the box structure and dimensions. Choose a supported style, enter the length, width and height, preview the flat layout and download a starting file for artwork or specification work.

The generated layout shows the panels, flaps, cut lines and crease lines needed to understand how the box folds. It is a dimensional starting point, not automatic production approval.

If you are still deciding what the box should be, compare packaging structures before generating a file. The more detailed artwork guidance appears later, once the dimensional job of the tool is clear.

This box dieline generator creates a flat packaging layout based on your selected box style and size. It gives you a practical file that can help with artwork planning, design review and quote preparation.

You can use it to:

Create a custom-size box template

Download a free dieline file

Preview cut and crease lines

Check the front, side and flap panels

Plan logo, text and barcode placement

Share a clearer file with your designer

Prepare better details for a packaging quote

The main value is speed. Instead of searching for a random template, you can create a dieline around your own box dimensions and download it straight away.

For a deeper explanation of bleed, fold lines and artwork setup, use our packaging dielines and box artwork setup resource before finalising your file.

Start with the product size. Measure the item first, then choose the box style that fits how the product will be packed, shipped or displayed.

Choose the Right Box Style

Select the structure that matches your packaging goal. Tuck-end cartons work well for many retail products. Mailer boxes are better for ecommerce parcels and branded unboxing. Corrugated shipping boxes are stronger for dispatch, storage and grouped products.

For tuck ends, gable boxes, pillow boxes and other carton formats, start with custom box styles and shapes. For ecommerce orders, custom mailer boxes often need extra attention to lid panels, side walls and inside print.

Enter Your Dimensions

Add the length, width and height as accurately as possible. A small size change can affect flap depth, panel space and artwork placement.

If your product needs tissue, wrapping, sleeves, inserts or extra protection, include that space before creating the outer box. Products that need inserts and dividers should have those internal pieces planned before the final box size is chosen.

Preview and Download

Preview the flat layout before downloading. Check where the front panel sits, how the flaps fold and where the cut and crease lines appear.

Once the dieline looks right, download it and use it as your starting file. The box dieline generator gives you a useful base, but the file should still be checked before final printing.

A generated dieline is a starting point, not final print approval. Before using it for production, check the file against the product, material and box style.

Make sure the product fits without being crushed or moving too much. Keep logos, QR codes, barcodes and small text away from cut lines and crease lines. If a colour, pattern or image should reach the edge, extend it into the bleed area.

Also check the material. Folding cartons, mailer boxes and shipping boxes do not fold the same way. Board thickness can affect panel fit, flap closure and crease behaviour.

For dispatch cartons or grouped products, Regular Slotted Containers are often used because the top and bottom flaps close in a simple corrugated format.

A dieline, box template and packaging net often mean the same thing. They describe the flat layout used to cut, crease, fold and print a box.

The word dieline is common in packaging production. Box template is easier for designers and product teams. Packaging net is often used to explain the flat shape of a 3D box.

The name matters less than the fit. The layout should match the product size, box style and material. If the template is wrong, the artwork may look fine on screen but fail when the box is folded.

Once the dieline is ready, it can be checked against the product, board choice, print method, finish and any insert requirements before production.

Custom Packly provides free design and dieline support, free 3D mockups and 24/7 packaging expert support if the generated layout needs to become a production-ready packaging specification.

UK production, a 4–6 working-day turnaround and free UK delivery apply to the wider packaging service. For projects with compliance requirements, applicable UK and EU certification support and documentation can be provided for the relevant packaging or material.

When the dieline, size, quantity and artwork direction are ready, send the specification through the custom packaging quote for instant pricing.