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Last updated: March 2026

What Size Box Do I Need for Shipping?

Enter your item dimensions and we'll recommend the smallest standard box that fits — with room for packing material.

BOXCALCULATORSHIPPING

1 inch can be the difference between fitting and getting stuck.

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Standard sizes say it works — but your measurements are what matter.

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What to Measure

1Item dimensions at the widest points — include any protruding parts (handles, knobs)
2Add 2" on each side for bubble wrap or packing peanuts (4" total per dimension)
3Weigh the item — carrier box size limits are based on both dimensions and weight

Common Mistakes to Avoid

Choosing a box that barely fits — you need 2" of padding on all sides to prevent damage in transit
Using an oversized box — items shift and break during shipping if there is too much empty space
Ignoring carrier dimensional weight pricing — an oversized lightweight box costs as much to ship as a heavy small one

Frequently Asked Questions

How much extra space should I leave in a shipping box?

Add 2 inches on each side of the item (4" total per dimension). This provides room for bubble wrap, packing paper, or foam. A 10×10×10" item needs a 14×14×14" box.

What are standard shipping box sizes?

Common sizes: Small (12×10×6"), Medium (18×14×12"), Large (24×18×18"), Extra Large (24×20×24"). Most carriers also accept custom sizes up to 165" combined length + girth.

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