Discounted Packaging | Custom Packaging & Printed Boxes USA / Connected packaging
Shipping box (RSC) blank size calculator
Flat sheet size of a regular slotted container before folding.
How it works
Blank width = 2 × length + 2 × width + glue flap. Blank height = height + width (two flaps of half the width each).
Tip
For exact dielines use the Box template maker; this is a quick planning size.
Questions
Why are flaps half the width?
So the outer flaps meet in the middle when closed.
Is board thickness included?
No; add allowances from your manufacturer for exact blanks.
Planning estimate only. Confirm sizes, strength and costs with samples and your written quote.
PLAN YOUR PACKAGING
From a better brief to a tailored quote.
Check sizing, compare materials and share your requirements. Final specifications and pricing are confirmed by the team.
Request a packaging quoteSelected delivery market: United States
Planning delivery to one of these American destinations?
New York, Los Angeles, Chicago, Houston, Miami
Add the delivery city and ZIP code to your brief. Freight, duties and delivery availability are confirmed in the quote.