USPS-Style Address Standardizer
Format any address to USPS standards instantly. Converts to all caps, applies standard abbreviations, and formats ZIP codes—all client-side, no data sent anywhere.
What This Tool Does
The Address Standardizer formats your address to match USPS mail processing standards. This helps ensure your mail is read correctly by automated sorting equipment.
UPPERCASE
Converts all text to capital letters as preferred by USPS.
No Punctuation
Removes commas and periods for cleaner formatting.
Abbreviations
Converts Street→ST, Avenue→AVE, Apartment→APT, etc.
ZIP Formatting
Adds hyphen to 9-digit ZIPs (12345-6789).
Privacy note: This tool runs entirely in your browser. Your address is never sent to any server.
Example
Before (Original)
John Smith
123 North Main Street, Apartment 4B
Los Angeles, California 900011234
After (Standardized)
JOHN SMITH
123 N MAIN ST APT 4B
LOS ANGELES CA 90001-1234
Frequently Asked Questions
What does this address standardizer do?
This tool formats your address to match USPS standards: all caps, no punctuation, standard abbreviations (ST, AVE, APT, etc.), and proper ZIP code formatting. It does NOT validate whether the address exists—use our Address Validator for that.
Does this validate my address?
No. This is a formatting tool only. It converts your address to USPS-style format but cannot verify if the address actually exists. For address validation with ZIP+4 lookup, use our USPS Address Validator tool.
Why does USPS prefer standardized addresses?
Standardized addresses help USPS sorting machines read addresses quickly and accurately. Consistent formatting reduces delivery errors and speeds up mail processing. Using the standard format can help prevent your mail from being delayed or returned.
What abbreviations does this tool use?
The tool uses official USPS Publication 28 abbreviations including: ST (Street), AVE (Avenue), BLVD (Boulevard), DR (Drive), APT (Apartment), STE (Suite), and directionals like N, S, E, W. It also converts full state names to two-letter codes.
Can I paste a multi-line address?
Yes! Paste your address exactly as you have it—including line breaks. The tool will standardize each line while preserving the line structure.
Note: This tool formats addresses to USPS standards but does not validate whether an address exists. For address validation, use our Address Validator tool. This tool is not affiliated with USPS.
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