Contact Us  Rates & Prices 
Quick Guide To Measure Mailing Letters - Private PO Mailbox Rental Honolulu Back to the top

Quick Guide To Measure Mailing Letters

Here are some quick measurements on acceptable mailing sizes when mailing letters via the United States Postal Service.

  • Maximum size for Letters: 11-1/2" long x 6-1/8" high
  • Maximum thickness for Letters: 1/4" thick
  • Minimum size for Postcards and Letters (any size smaller that these dimensions cannot be mailed): 5" long x 3-1/2" high
  • Maximum size for Postcards: 6" long x 4-1/4" high
  • Maximum thickness for Large Envelopes: 3/4" thick

Once a piece of mail exceeds the maximum length, height, or thickness of one shape, it automatically gets classified as the next largest shape and it's equivalent postage.

Also, large envelope prices will be applied to letter-sized items over 3.5 ounces.

To double check or get an estimate on the cost of your postage, visit the United States Postal Service website linked here: http://postcalc.usps.com


Back to the top
Fill out the form
to get the
Application/
Discount
First Name
Last Name
Phone (optional)
E-mail
Comments

Anti-Spam Check
 Please check
the box to verify you
are a real person and
not a spam robot.

Privacy
We value our
relationship with YOU!.
Your Email address is
not shared with anyone
except
themailboxhawaii.com.

ref no:20528

Like Our Facebook


  • RELATED LINKS
    Please send questions about this website to
    Copyright© 2011 - 2023 TheMailBoxHawaii.com. All rights reserved.
    Terms of Use / Legal Disclaimer / Privacy Statement
    Site Designed and Managed by MacBusiness Consulting