What is Cubic Pricing?

USPS Cubic Pricing is a way for high volume shipping customers to get discounted rates on small and heavy packages. Normally, the customer must ship at least 50,000 packages a year, and packages must weigh less than 20 pounds and measure no more than 0.5 cubic feet to qualify. With Cubic Pricing, customers only pay for the size and shipping distance of an outgoing shipment.

Since weight isn't part of the rate calculation for Cubic Pricing, it's a great way for businesses to lower shipping costs. Since all major carriers (DHL, FedEx, UPS, and even the USPS) base their pricing on weight, Cubic Pricing allows savvy businesses to get discounted flat rates on their heavier packages.

How Cubic Pricing Works

Cubic Pricing is measured by calculating:

Length x Width x Height / 1728 = Cubic Feet (the longest dimension may not exceed 18", or the package will be disqualified from Cubic Pricing rates)

Based on the cubic feet measurement, your package will fall into one of five tiers:

• 0.1: Packages up to .10 cubic feet
• 0.2: Packages more than .10 and up to .20 cubic feet
• 0.3: Packages more than .20 and up to .30 cubic feet
• 0.4: Packages more than .30 and up to .40 cubic feet
• 0.5: Packages more than .40 and up to .50 cubic feet

Cubic Price Chart by Zone

The following is a pricing chart for Commercial Plus rates as of January 21, 2018.