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data validator

ISBN Validator

Validate ISBN-10 and ISBN-13 with checksums.

Results

Processing…
Status
Processing...
Details
Processing...

Rules & checks

Supports ISBN-10 and ISBN-13 with checksum math.

Ignores spaces and dashes.

When to use it

  • Validate ISBNs before importing product catalogs
  • Check barcodes or listings for typos
  • QA publishing metadata before distribution

Tips

  • Keep dashes/spaces consistent when storing raw values
  • Strip formatting if your system normalizes digits only

Examples

Valid ISBN-13

  • 9783161484100 -> valid

Invalid ISBN

  • 9783161484101 -> checksum fails

FAQs

Does this fetch book metadata?
No. It only checks ISBN format and checksum.
Can I validate ISSN/GTIN?
Use dedicated validators for those codes.

Related validators

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Credit Card Validator

Run a local Luhn check to confirm card number format before hitting payment APIs—no data leaves your browser.

Format-only; does not fetch book metadata.