ISBN stands for International Standard Book Number. It's a unique numeric commercial book identifier assigned to each edition and variation of a book. The ISBN is 13 digits long (10 digits for books published before 2007).

Free ISBN Lookup Tool

Search any book by ISBN-10 or ISBN-13 number instantly. Get covers, descriptions, and AI-powered insights.

Our free ISBN search tool aggregates data from Google Books, Open Library, and Amazon to provide comprehensive book information.

Why Use Our ISBN Lookup Tool?

Multiple Data Sources
Comprehensive book information from Google Books, Open Library, and Amazon
ISBN-13 Standardization
Automatic conversion of ISBN-10 to the modern ISBN-13 format
AI-Powered Insights
Intelligent book analysis and overview generation
Barcode Scanner
Quick ISBN lookup using your device camera
Search History
Easy access to your recently searched books
Smart ISBN Handling
Automatic format detection and validation

Frequently Asked Questions

About ISBN Numbers

The International Standard Book Number (ISBN) is a unique numeric identifier for commercial books. It was established in 1967 and has become the global standard for identifying published books.

ISBN-13 Format

Modern ISBNs consist of 13 digits divided into 5 parts:

978-3-16-148410-0

978/979: EAN prefix
3: Registration group (country/language)
16: Registrant (publisher)
148410: Publication (specific edition)
0: Check digit

Common Questions

What is an ISBN?

ISBN stands for International Standard Book Number. It's a unique numeric commercial book identifier that's assigned to each edition and variation of a book. The ISBN is 13 digits long (10 digits for books published before 2007).

What's the difference between ISBN-10 and ISBN-13?

ISBN-10 was the standard format until 2007, consisting of 10 digits. ISBN-13 is the current standard, beginning with the prefix 978 or 979. All ISBN-10s can be converted to ISBN-13s, but not all ISBN-13s can be converted back to ISBN-10s.

Where can I find a book's ISBN?

The ISBN is typically printed on the back cover of a book above the barcode. It can also be found on the copyright page (usually one of the first few pages of the book), often near the publisher information.

Our ISBN Database

ISBNLookup combines data from multiple sources to provide comprehensive book information:

G
Google Books API
Provides comprehensive metadata including descriptions and cover images
O
Open Library
Offers additional book data and alternative cover images
A
Amazon Books
Provides detailed book information and high-quality cover images

ISBN Lookup Features

Why Use Our ISBN Lookup Tool?

Multiple Data Sources

ISBN-13 Standardization

AI-Powered Insights

Barcode Scanner

Search History

Smart ISBN Handling

Frequently Asked Questions

About ISBN Numbers

ISBN-13 Format

Common Questions

What is an ISBN?

What's the difference between ISBN-10 and ISBN-13?

Where can I find a book's ISBN?

Our ISBN Database

Why Use Our ISBN Lookup Tool?

Multiple Data Sources

ISBN-13 Standardization

AI-Powered Insights

Barcode Scanner

Search History

Smart ISBN Handling

Frequently Asked Questions

About ISBN Numbers

ISBN-13 Format

Common Questions

What is an ISBN?

What's the difference between ISBN-10 and ISBN-13?

Where can I find a book's ISBN?

Our ISBN Database