Box-it

Box-it helps you plan and build custom cardboard boxes from scratch.

Enter your box dimensions (Length × Width × Height) in inches or centimeters, choose whether to include flaps, and instantly get everything you need to cut and assemble your box.

WHAT YOU GET:

Box Net Diagram
A visual unfolded layout of your box showing all panels clearly.

Cut Measurements
Exact dimensions for every panel — front, back, sides, top and bottom.

Sheet Requirements
The minimum cardboard sheet size you need, plus total surface area across all panels.

Assembly Steps
Step-by-step folding and assembly instructions tailored to your dimensions and flap selection.

FLAP OPTIONS:
Choose left/right flaps, top/bottom flaps, or both — the diagram and measurements update instantly.

UNITS:
Switch between inches and centimeters at any time.

PERFECT FOR:
• Packaging custom products
• DIY projects and crafts
• Shipping and moving boxes
• Prototyping and model making
• School and maker projects

No account required. Works completely offline. No ads. No data collected.