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Postal Code Validator

Validate postal codes by country regex pattern with format examples (55+ countries)

Select a country and enter a postal code to validate it against the country's official format.

Pattern: 5 digits or 5+4

Example: 94103-1234

How to use

  1. Select a country from the searchable dropdown.
  2. Enter a postal code in the code field; the placeholder shows an example for the selected country.
  3. The tool instantly shows the official regex pattern and a format example.
  4. Read the green 'Valid' or red 'Invalid' result below.

Examples

  • Selecting United States (US) and entering 90210 returns Valid; entering 9021 returns Invalid.
  • Selecting Japan (JP) and entering 100-0001 returns Valid against the pattern \d{3}-\d{4}.

Verify outputs before using in production. No warranty — see Terms.