USPS
USPS Shipping Rules
Complete guide to surcharges, restrictions, and package requirements
DIM Divisor
166
Max Weight
70 lbs
Max Length
108"
Max L+G
130"
Surcharge Types
4
Surcharge Rules & Triggers
Size & Weight
DIM weight applies (zones 5-9 only)
Packages > 1 cubic foot use DIM weight (divisor 166) for zones 5-9 only
Triggers when:
- • Volume > 1728 in³
- • Zone >= 5
Stacks
Nonstandard Length (22-30")
Ground Advantage packages 22-30 inches length
Triggers when:
- • Length > 22"
- • Length <= 30"
Stacks
Nonstandard Length (>30")
Ground Advantage packages over 30 inches length
Triggers when:
- • Length > 30"
Stacks
Nonstandard Volume (>2 ft³)
Ground Advantage packages over 2 cubic feet
Triggers when:
- • Volume > 3456 in³
Stacks
Ready to validate your package?
Use our validator to check if your package meets USPS requirements and identify potential surcharges.
Validate Package →