ZIP Code Formatter
Format and validate ZIP codes and postal codes. Check US 5-digit ZIP and ZIP+4 formats with instant validation.
US ZIP Format
10001
Standard 5-digit ZIP code
ZIP+4 Format
N/A
Extended ZIP code format
Input Length
5.00
Characters in input
Is Valid US ZIP (5 digits)
Yes
5-digit validation
Is Valid ZIP+4 (9 digits)
No
9-digit validation