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data validator

Postal/ZIP Code Validator

Validate postal/ZIP codes by country (US, CA, UK, DE, FR, AU, NL, ES, IT, BR, IN, SG, NZ, CH, JP) entirely in your browser.

Results

Processing…
Status
Processing...
Details
Processing...
Country
Processing...
Normalized code
Processing...

How to use this validator

  1. Select the country for validation.
  2. Paste the postal/ZIP code (allowing standard spacing/hyphen).
  3. Run validate to match against the country pattern.
  4. If invalid, adjust spacing/length to match the country’s standard and re-run.

Rules & checks

Checks format against country-specific regex patterns.

Supports US, CA, GB, DE, FR, AU, NL, ES, IT, BR, IN, SG, NZ, CH, JP.

Runs entirely in your browser/offline; no data leaves the page.

Inputs explained

  • Country

    Choose the country whose pattern you want to validate (US, CA, GB, DE, FR, AU, NL, ES, IT, BR, IN, SG, NZ, CH, JP).

  • Postal / ZIP code

    Paste the code with optional spacing/hyphen. We normalize casing for alphanumeric codes.

When to use it

  • Pre-validate addresses in checkout forms
  • QA CSV imports of customer addresses
  • Support teams verifying user-submitted addresses

Common errors

  • Wrong length for the selected country
  • Missing required spacing/hyphen (e.g., UK/CA)
  • Using the wrong country code/pattern for the provided code

Limitations

  • Format-only; does not verify address existence or deliverability.
  • Country list is pre-set; add more patterns as needed.

Tips

  • Normalize casing for alphanumeric codes (e.g., UK/CA)
  • Keep country and postal code in sync to avoid mismatches
  • Strip leading/trailing whitespace before validation

Examples

US ZIP+4

  • 94105-1234 -> Valid

Canada

  • K1A 0B1 -> Valid

UK

  • SW1A 1AA -> Valid

India

  • 110001 -> Valid

Japan

  • 150-0001 -> Valid

Invalid length

  • 9410 -> Invalid for US

Deep dive

This postal/ZIP validator checks country-specific patterns (US, CA, GB, DE, FR, AU, NL, ES, IT, BR, IN, SG, NZ, CH, JP) entirely in your browser.

Use it to clean addresses in forms and CSV imports before shipping or storing them.

FAQs

Is anything uploaded?
No. Validation runs locally and clears on refresh.
Do you verify deliverability?
No. This checks format only; use carrier APIs for deliverability.

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