USPS Cubic Rates in ianaiERP
USPS Cubic Rates in ianaiERP
USPS Cubic Rates in ianaiERP
Save money on small, heavy packages with USPS cubic pricing - a volume-based rate system available through ianaiERP. Unlike traditional weight-based pricing, cubic rates are calculated using your package's dimensions, making them especially cost-effective for compact, heavy items.
When you enter your shipment's weight and dimensions in ianaiERP, the system automatically compares regular and cubic rates, guaranteeing you get the lowest available price. Read on to learn how cubic pricing is calculated and how to qualify for these rates.
Available USPS Cubic Services
Priority Mail Cubic
Packages must meet these criteria:
Maximum weight: 20 lbs
Maximum volume: 0.50 cubic feet
Maximum single dimension: 18 inches
Ground Advantage Cubic
A more economical but slower shipping option with these requirements:
Maximum weight: 20 lbs
Maximum volume: 1.0 cubic foot
Maximum single dimension: 18 inches
Receive Cubic Rates in ianaiERP
To receive cubic rates in ianaiERP:
Choose USPS Ground Advantage (formerly Parcel Select Ground) or a domestic Priority service.
Choose a package type of Package.
Package Requirements
To qualify for cubic rates, your package must:
Be 18 inches or less in its longest dimension
Be a standard box (no tubes or rolls)
Not be a USPS Flat Rate box (these require their own specific package type)
Have accurate dimensions (rounded down to nearest 0.25 inch) and weight entered
ianaiERP automatically compares regular and cubic rates, displaying the lowest available price for your shipment.
Calculating Cubic for Domestic Priority and Ground Advantage
The cubic feet measurement for the package is calculated by: [ Length x Width x Height ] / 1728 = Cubic Feet
Note: All measurements should be rounded down to the nearest quarter inch (0.25")
Priority Mail Cubic Tiers
Five pricing tiers based on cubic feet:
Tier | Cubic Feet Range |
|---|---|
0.1 | Up to 0.10 |
0.2 | 0.10 to 0.20 |
0.3 | 0.20 to 0.30 |
0.4 | 0.30 to 0.40 |
0.5 | 0.40 to 0.50 |
Ground Advantage Cubic Tiers
Ten pricing tiers based on cubic feet:
Tier | Cubic Feet Range |
|---|---|
0.1 | Up to 0.10 |
0.2 | 0.10 to 0.20 |
0.3 | 0.20 to 0.30 |
0.4 | 0.30 to 0.40 |
0.5 | 0.40 to 0.50 |
0.6 | 0.50 to 0.60 |
0.7 | 0.60 to 0.70 |
0.8 | 0.70 to 0.80 |
0.9 | 0.80 to 0.90 |
1.0 | 0.90 to 1.00 |
Soft Pack Cubic Pricing
USPS also offers special cubic rates for soft packs and poly mailers. These use a simplified measurement system based on length plus width.
Package Requirements
Maximum weight: 20 lbs
Maximum single dimension: 18 inches
Cannot be tubes or rolls
Priority Mail Soft Pack Tiers
Tier | Length + Width |
|---|---|
0.1 | Up to 21" |
0.2 | 21" to 27" |
0.3 | 27" to 31" |
0.4 | 31" to 34" |
0.5 | 34" to 36" |
Ground Advantage Soft Pack Tiers
Tier | Length + Width |
|---|---|
0.1 | Up to 16" |
0.2 | 16" to 21" |
0.3 | 21" to 24" |
0.4 | 24" to 26" |
0.5 | 26" to 28" |
0.6 | 28" to 30" |
0.7 | 30" to 32" |
0.8 | 32" to 34" |
0.9 | 34" to 35" |
1.0 | 35" to 36" |
Important Notes
Regular boxes must meet dimensional requirements
Flat Rate boxes are not eligible for cubic pricing
Measurements must be rounded down to the nearest 0.25 inch
The system automatically compares weight-based and cubic-based rates to provide the lowest cost
Join our Community Forum
Any other questions? Get in touch