EAN / ISBN Validator
Check EAN-13, UPC and ISBN numbers, convert ISBN-10 ↔ 13.
✓ Valid check digit.
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter your values.
- 2See the result update instantly as you type.
- 3Change any value to compare scenarios.
About this tool
EAN / ISBN Validator: Check EAN-13, UPC and ISBN numbers, convert ISBN-10 ↔ 13. Type your numbers and the result is calculated instantly — no button to press, nothing to install. All math runs locally in your browser, so the values you enter are never sent anywhere.
Example
| Input | |
|---|---|
| Number | 978-3-16-148410-0 |
| Result | |
| Type | ISBN-13 |
| Converted ISBN | 316148410X |
How do I use the EAN / ISBN Validator?
Enter your values. See the result update instantly as you type. Change any value to compare scenarios.
Is the EAN / ISBN Validator free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.