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Priority Mail Box Sizes

Find the perfect box size for your product. Minimize void space and shipping cost.

Product Dimensions
Recommended Boxes
Frequently Asked Questions
How much does shipping cost?

Shipping cost depends on weight, dimensions, distance, carrier, and service level. Parcel shipping (under 70 lbs) typically costs $7-35. LTL freight (150-10,000 lbs) costs $85-1,500+. We calculate estimates for all major carriers.

Which shipping carrier is cheapest?

It depends on your package. USPS is often cheapest for under 1 lb. UPS/FedEx Ground are competitive for 1-50 lbs. For 50+ lbs, LTL freight becomes more economical. Our tool compares all carriers instantly.

What are accessorial charges?

Accessorial charges are extra fees beyond base freight: residential delivery ($75-125), liftgate ($75-100), inside delivery ($100-150), appointment scheduling ($50), and reweigh/reclassification fees.