Cubic Tier | 0-150 miles Zone 0,1,2 | 150-300 miles Zone 3 | 300-600 miles Zone 4 | 600-1000 miles Zone 5 | 1000-1400 miles Zone 6 | 1400-1800 miles Zone 7 | 1800+ miles Zone 8 | Territories Zone 9 |
|---|---|---|---|---|---|---|---|---|
| Cubic 0.1 | - | - | - | - | - | - | - | - |
| Cubic 0.2 | - | - | - | - | - | - | - | - |
| Cubic 0.3 | - | - | - | - | - | - | - | - |
| Cubic 0.4 | - | - | - | - | - | - | - | - |
| Cubic 0.5 | - | - | - | - | - | - | - | - |
Cubic pricing simplifies shipping charges, because anything that fits in the box—up to 20 pounds—will ship for the same price, just depending on the Zone.
Here are our tips for choosing the best shipping price to charge your customers.
Cubic Tier | 0-150 miles Zone 0,1,2 | 150-300 miles Zone 3 | 300-600 miles Zone 4 | 600-1000 miles Zone 5 | 1000-1400 miles Zone 6 | 1400-1800 miles Zone 7 | 1800+ miles Zone 8 | Territories Zone 9 |
|---|---|---|---|---|---|---|---|---|
| Cubic 0.1 | $7.32 | $7.59 | $7.81 | $8.12 | $8.87 | $9.14 | $9.52 | $16.14 |
| Cubic 0.2 | $8.14 | $8.46 | $8.71 | $9.00 | $9.68 | $9.93 | $10.31 | $17.09 |
| Cubic 0.3 | $8.77 | $8.96 | $9.28 | $9.97 | $11.79 | $12.45 | $13.25 | $24.69 |
| Cubic 0.4 | $8.93 | $9.27 | $9.66 | $10.60 | $13.58 | $14.89 | $17.01 | $30.84 |
| Cubic 0.5 | $9.08 | $9.58 | $10.22 | $11.50 | $16.02 | $18.08 | $20.58 | $38.28 |
Any items small enough to fit in the USPS Priority Mail Flat Rate or Regional Rate packaging are also small enough to qualify for Cubic pricing.
We did the math to determine when you should use your own packaging (and ship Priority Mail Cubic) and when you should grab a Flat or Regional Rate box.
Here are the USPS-branded boxes that fit your Cubic Tier and when you should use them.
Weight | Zone 0,1,2 | Zone 3 | Zone 4 | Zone 5 | Zone 6 | Zone 7 | Zone 8 | Zone 9 |
|---|---|---|---|---|---|---|---|---|
| 0.5 lbs | $7.16 | $7.46 | $7.67 | $7.88 | $7.90 | $7.90 | $7.90 | $7.90 |
| 1 lbs | $7.16 | $7.46 | $7.67 | $7.88 | $7.90 | $7.90 | $7.90 | $7.90 |
| 2 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 3 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 4 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 5 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 6 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 7 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 8-20 lbs | $7.32 | $7.59 | $7.81 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
| 21-70 lbs | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 | $7.90 |
USPS Priority Mail Cubic is instantly available to all Shippo customers at signup—no volume threshold required.
Boxes
We promise you’ll always be shown the best rates during your label creation flow, including USPS Priority Mail Cubic, if your box qualifies. Make sure to select Enter Custom Dimensions or choose a qualifying Package Template when entering package details.
Cubic prices will be listed as USPS Priority Mail. Once you print your label, you’ll see Cubic in the top right corner of your label under the postage box:
Envelopes and Poly Mailers (also known as Soft Pack)
To access Soft Pack pricing, select Carrier Provided Parcels* in the Package section. Scroll through the drop down and select Soft Pack. Enter the package details and the Cubic rate will load as USPS Priority Mail.
*Note: you must use your own envelope or poly mailer to qualify. Do not use a USPS-branded package.
