Cathy Hopkins Books

Mates Dates and Sole Survivors

By Cathy Hopkins

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Mates Dates Boxed Set One

By Cathy Hopkins

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Mates, dates, and inflatable bras

By Cathy Hopkins

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Fourteen-year-old Lucy finds herself desperately in need of a self-esteem boost when she is completely stumped by a class writing assignment, gets a bad haircut, and decides her physical developmen...

Mates dates and cosmic kisses

By Cathy Hopkins

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Thursday night: no call. Friday morning: No call. I'm going out of my mind. Perhaps he lost my number? Perhaps saying he'd phone was a way of getting rid of me? Perhaps, perhaps, perhaps. Izzie is...

Mates, dates and designer divas

By Cathy Hopkins

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Mates, dates, and sleepover secrets

By Cathy Hopkins

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Mates, Dates, and Sole Survivors

By Cathy Hopkins

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Lucy finds a new boyfriend, but later feels that she is being smothered by too much love.

Mates, dates and mad mistakes

By Cathy Hopkins

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Mates Dates and Sequin Smiles Mates Dates...

By Cathy Hopkins

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The Princess of Pop Truth or Dare

By Cathy Hopkins

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.