Post office if it fits it ships

Table of Contents Show

Why use our flat rate box?
Simplify your sending
No surprise costs
3 convenient sizes
Environmentally friendly packaging
What the flat rate box includes
How to get your flat rate box and ship
Box sizes and costs
News and stories
News and stories
Does USPS fit if it ships?
What size are the USPS if it fits it ships boxes?
Are USPS fits it ships boxes free?
Is it cheaper to use a flat rate box or your own box?

Why use our flat rate box?

Simplify your sending

Purchase a ready to use box from any Canada Post location. Pack your items, address your box and send your package on its way.

No surprise costs

No need to calculate shipping rates. The price of postage is included in the cost of the box. Postage isn’t based on your parcel’s destination or weight, up to 5 kg.

3 convenient sizes

Boxes come in small, medium and large to meet your shipping needs. Large flat rate boxes are not available at all Canada Post locations. A request for large boxes can be made by the post office.

Environmentally friendly packaging

Our flat rate box is produced with at least 60% recycled content and 25% post-consumer waste. They are printed using water-based inks and are 100% recyclable.

What the flat rate box includes

Postage
High quality shipping box
Tracking and on-time delivery guarantee*
Up to $100 of liability coverage for loss or damage**

No additional features and options can be added such as additional liability, coverage or signature***.

How to get your flat rate box and ship

Purchase a box from any post office across Canada. Flat rate boxes cannot be purchased online.
Pack your flat rate box without changing its dimensions or shape and secure its contents. Make sure your box doesn’t weigh more than 5 kg. These boxes will not be accepted.
Ship your box from any post office or drop off small boxes in a street letter box. Please note that the delivery standard period starts when the box is first scanned.

Box sizes and costs

All flat rate boxes include tracking and on-time delivery guarantee across the country, varying by destination. Use our online delivery standards tool to find out when you can expect your flat rate box to reach its receiver.

Determine delivery standard

	Small	Medium	Large
Dimensions Length x Width x Height	35cm x 26 cm x 5cm (10 3/8 inches x 14 inches x 2 1/8 inches)	39 cm x 26 cm x 12 cm (15 3/8 inches x 10 1/4 inches x 4 3/4 inches)	40 cm x 30 cm x 19 cm (15 3/4 inches x 11 13/16 inches x 7 1/2 inches)
Max. weight	5 kg	5 kg	5 kg
Price	$18.49	$23.49	$29.99
Drop off location	Street letter box or post office	Post office	Post office

	Small	Medium	Large
Dimensions Length x Width x Height	35cm x 26 cm x 5cm (10 3/8 inches x 14 inches x 2 1/8 inches)	39 cm x 26 cm x 12 cm (15 3/8 inches x 10 1/4 inches x 4 3/4 inches)	40 cm x 30 cm x 19 cm (15 3/4 inches x 11 13/16 inches x 7 1/2 inches)
Max. weight	5 kg	5 kg	5 kg
Price	$18.49	$23.49	$29.99
Drop off location	Street letter box or post office	Post office	Post office

*For information on the on-time delivery guarantee refer to the Canada Post Guide for Terms and Conditions.
**Exceptions and conditions apply. See General Terms and Conditions for more information.
***Canada Post Solutions for Small Business TM and commercial accounts are not eligible for discounts on the flat rate box.

News and stories

Does USPS fit if it ships?

If it fits, it ships®* anywhere in the country for a low flat rate (even lower when you ship online). For more information, please visit the Shipping Page. Note: When shipping packages, size and weight restrictions may apply and additional shipping rates may be required.

What size are the USPS if it fits it ships boxes?

Small: 8 ⅝” x 5 ⅜” x 1 ⅝” Medium: 13 ⅝” x 11 ⅞” x 11” or 11” x 8 ½” x 5 ½” Large: 23 11/16” x 11 ¾” x 12” or 12” 12” x 5 ½”

Are USPS fits it ships boxes free?

Free Boxes From USPS Anyone can go to the post office and pick up these boxes for free. They work on the premise of “if it fits, it ships,” which gives plenty of options to anyone mailing a package and gives some breathing room to those who regularly mail higher-density objects.

Is it cheaper to use a flat rate box or your own box?

As we mentioned above, combining your own custom packaging with the right USPS service is often more cost-effective than using flat-rate boxes. One such option is taking advantage of cubic pricing. Priority Mail cubic pricing is a more efficient USPS service for shipping small packages that weigh up to 20 pounds.