Zip Code Format Validator
Check whether a postal code matches a country's format.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Zip Code Format Validator
How to use this tool
- Enter your values in the fields above.
- Press Generate to see the result.
- Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.
Worked example
US code 90210 matches the United States format; 9021 does not.
What this tool does not do / Limits
Format only. A code can match the pattern yet not exist, and some real codes in a country may use a rarer pattern this checker does not cover.
Frequently asked questions
Does a valid format mean the code exists?
No. It only means the characters match the usual pattern for that country.
Which countries are covered?
United States, United Kingdom, Canada, Pakistan, India, Germany and France.
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