ISBN13 code is valid
What this tool does
This tool checks if a 13-digit book identification number (ISBN-13) is correctly formatted. It verifies the length and the final check digit to ensure the code is valid for standard book products like paperbacks, e-books, and audiobooks.
Note: This check only validates the format and mathematical structure of the number. It does not verify if the book actually exists in a catalog or if the ISBN is currently assigned to a real product.
Common uses
- Validating book metadata before adding it to a library or sales catalog.
- Checking user-entered ISBN numbers in forms to prevent typos.
- Cleaning up data by removing or flagging incorrectly formatted book codes.
Input data
| Parameter | Required | Example | Description |
|---|---|---|---|
isbn | Yes | 9780306406157 | Enter the 13-digit ISBN code as text (for example, '9780306406157'). This field is required. |
Output data
| Field | Description |
|---|---|
result | Returns yes or no. Yes means the ISBN-13 code has the correct length and check digit; no means it does not. For example, yes. |