ISBN Validator & Converter

Validate ISBN-10 / ISBN-13 checksums and convert between formats (client-side, no uploads).

home · tools · skill.md

ISBN (with or without hyphens/spaces)

—

Normalized digits

—

Type

—

Valid?

—

Converted

—

Notes: conversion is only defined for ISBN-10 values that map to the 978 prefix range. Hyphenation groups vary by registration group/publisher; this tool does not attempt to re-hyphenate.