About ISBN Validator
The free ISBN Validator tool helps you verify the validity of an ISBN, with option to further verify the validity on National Library’s Portal, Amazon, ISBN Search etc. It also comes with a free barcode generator. Simply enter the ISBN (13-digit) and click on Validate ISBN.
The ISBN Validator tool checks the validity of an ISBN-13 number by verifying that the number has exactly 13 digits, calculating a check digit based on the first 12 digits and comparing the calculated check digit with the last digit of the input number. If the check digit matches, the tool displays “Valid ISBN-13 number.” Otherwise, it displays an error message. You can also further verify the validity of the number on the available portals as provided above. Be aware that verification is based on availablity of number’s record on the respective platforms & portals.
ISBN Validator details
ISBN Validator is a free Books & Reference app for Android with 1+ installs on Google Play and a 5.0/5 average rating from 1 rating. It was released on February 13, 2025 and last updated on February 13, 2025. It requires Android 8.0 or later.
- Category
- Books & Reference
- Rating
- 5.0 / 5 (1 rating)
- Installs
- 1+
- Price
- Free
- In-app purchases
- No
- Ads
- No ads
- Current version
- 1.0.0
- Requires Android
- 8.0
- Content rating
- Everyone
- Released
- February 13, 2025
- Last updated
- February 13, 2025
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