Save 70%+ with USPS Priority Mail Cubic®

Save with cubic pricing on packages up to 20 lbs. Optimize your shipping costs with USPS Priority Mail Cubic® on Rollo Ship. Perfect for small, dense packages, offering discounted rates and reliable delivery within 1-3 business days.

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What Is USPS Priority Mail Cubic®

USPS Priority Mail Cubic® is a specialized service within Priority Mail, designed to ship packages that are small and heavy (think shoeboxes or mailers). It’s an excellent option for streamlining your shipping process and reducing costs. Pricing is based on the package’s dimensions rather than weight, making it perfect for compact items up to 20 pounds, with a maximum dimension of 18 inches. USPS Priority Mail Cubic offers fast, 1-3 day delivery across the U.S., including Alaska, Hawaii, Puerto Rico, and select territories, with free tracking and $100 in insurance coverage.

USPS Cubic pricing is divided into Cubic Tiers and Zones, determined by the shipping distance between the origin and destination.

With Rollo Ship, enter your package dimensions, and you’ll see a selection of discounted rates, including significant savings on USPS Priority Mail Cubic®.

Max Dimension

20

Max Weight

0.5

Max Cubic Volume

1-3

Delivery in Business Days, To Anywhere in the U.S.

Cubic

Pricing

Domestic

USPS Shipping

70+

OFF in Rollo Ship

Free

Door-to-Door Package Tracking

USPS Priority Mail Cubic® Pricing

USPS Priority Mail Cubic® is an ideal option for small but relatively heavy packages. The cubic pricing and discounts available through Rollo Ship without minimum shipping volume required, help any shipper budget their shipping costs.

How to Calculate Your Exact Cubic Volume

For Boxes: Length (inches) x Width (inches) x Height (inches) (any of these shouldn’t exceed 18″). Then divide by 1728.

For Mailers: Length (inches) x Width (inches) x 0.5 (where 0.5 is the assumed thickness and any of the dimensions shouldn’t exceed 18″). Then divide by 1728.

Key Tips:

Round up to the nearest quarter-inch when measuring.
Use Cubic Pricing only if the volume is under 0.5 cubic feet.
This pricing option is available with Commercial Pricing services like Rollo Ship.

This simple math can lead to significant savings, especially if you frequently ship small, dense packages!

Shop for Mailers

USPS Priority Mail Cubic is structured into five distinct cubic tiers, each defined by the package’s volume in cubic feet:

Cubic Pricing Tiers	Volume Range (Cubic Feet)
Tier 1	Up to 0.10
Tier 2	0.101 to 0.20
Tier 3	0.201 to 0.30
Tier 4	0.301 to 0.40
Tier 5	0.401 to 0.50

To determine the appropriate tier for a rectangular or non-rectangular package:

Measure Dimensions: Measure the length, width, and height at their maximum points in inches.
Round Down: Round each measurement down to the nearest 1/4 inch. For example, 12-3/8 inches becomes 12-1/4 inches.
Calculate Volume: Multiply the length by the width by the height, then divide by 1,728 to convert cubic inches to cubic feet.
Assign Tier: Match the calculated volume to the corresponding cubic tier from the table above.

For soft packs and padded envelopes:

Measure Dimensions: Measure the length and width of the original packaging material in inches.
Round Down: Round each measurement down to the nearest 1/4 inch.
Sum Dimensions: Add the length and width measurements.
Determine Tier: Use the following guidelines to assign the cubic tier:

Cubic Pricing Tier	Length + Width (Inches)
Tier 1	Up to 21
Tier 2	21.01 to 27
Tier 3	27.01 to 31
Tier 4	31.01 to 34
Tier 5	34.01 to 36

By accurately measuring and calculating your package’s dimensions, you can determine the appropriate cubic tier, ensuring optimal shipping rates with USPS Priority Mail Cubic®.

**Why Choose USPS Priority Mail Cubic with Rollo Ship?**

01. Affordable for Small, Heavy Packages

Priority Mail Cubic pricing is based on dimensions, not weight, offering a unique advantage for small, dense packages. This can lead to significant savings, especially for heavier items.

02. Access to Premium Shipping Rates

USPS Priority Mail Cubic rates are typically available only to high-volume shippers, but with Rollo Ship, you gain access to these rates, even without meeting high-volume requirements.

03. Schedule USPS Pickup, Enjoy Tracking – For Free

Stay updated on your package’s journey with free tracking on every shipment, offering peace of mind for you and your customers.

USPS Priority Mail Shipping

Size & Weight Restrictions

Suitable for

Small packages that weigh 20 pounds max

Type of Package

Envelope, Poly Mailer, Bubble Mailer or Box

Max Any Dimension

18"

Max Weight

20 lbs

Save on Small and Heavy Packages with Cubic Pricing in Rollo Ship

Unlock cost savings on shipping for small, dense packages with USPS Priority Mail Cubic through Rollo Ship. Start reducing your shipping costs today!

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*Discounts off USPS daily rates. Rates are limited to shipping from the U.S. only. Rates and any applicable discounts are subject to change at any time without notice. **USPS®, the USPS® brandmark, and the relevant colors are trademarks of the United States Postal Service. Used with permission. ©2024 U.S. Postal Service®. All rights reserved.