An author bio is a short, third-person description of who you are as a writer, written to help readers decide whether your books are for them. A good one names your genre in the first sentence, gives one or two credible or memorable details, and ends with a light personal touch or a next step, such as where to find more of your books. Most author bios need several versions of different lengths for different places.

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This guide gives you fill-in-the-blank author bio templates for Amazon, your back cover, your website, social media and guest posts, plus sample author bios by genre, versions for first-time authors and pen names, and privacy tips. All the examples use invented authors, so you can borrow the shape without copying anyone.

At a glance

• Lead with what you write, not where you were born. Readers want to know if your books suit them.
• Keep one master bio and cut it down into a one-line, short (50-word), medium (100 to 150-word) and long (250-word) version.
• Match the tone to your genre: warm for romance, taut for thrillers, credential-led for non-fiction.
• No credentials yet? Use your reason for writing, your setting or your life experience instead.
• Never include your personal email, home suburb, children’s names or other details you would not tell a stranger.

What an author bio needs to do

A reader sees your bio at the moment they are deciding whether to trust you with their time or money. That makes it a small piece of marketing, not a CV. Every good bio answers three questions quickly:

1. What do you write? Genre, sub-genre or subject, ideally in the first sentence.
2. Why should I believe you can deliver? Credentials, relevant experience, series size or a vivid reason you write this kind of book.
3. Who are you, briefly? One human detail that fits your brand, such as where you write, a pet, a hobby or a habit.

Most bios are written in the third person (“Jo Marlow writes…”) because they are often reused by others, such as podcast hosts or event organisers. First person can work on your own website and social profiles, where readers expect your voice.

Author bio lengths by placement

Platforms do not all set strict limits, and those that do can change them, so treat the lengths below as working guides rather than rules. Check the current limit in each tool when you paste your bio in.

Placement	Suggested length	Person	Focus
Amazon Author Page (Author Central)	100 to 200 words	Third	Genre, series, what readers can expect
Back cover or inside flap	40 to 80 words	Third	Credibility and one personal detail
“About the author” page in the book	100 to 200 words	Third	Fuller bio plus where to find more books
Website About page	250 to 500 words	First or third	Your story, your books, an invitation to join your list
Instagram or X profile	One line (Instagram allows 150 characters and X allows 160 at the time of writing, October 2026)	Either	Genre plus a hook
Guest post, podcast or press	50 to 100 words	Third	Credentials relevant to the topic

Your Amazon bio appears across several Amazon stores, so write it for a worldwide audience and avoid local references that will confuse overseas readers. Our Amazon Author Central guide explains which stores need their own page and how to set it up.

Author bio templates you can fill in

Replace the bracketed parts. Then read it aloud: if a sentence sounds like a job application, rewrite it in plainer words.

Amazon and “About the author” template (about 120 words)

[Pen name] writes [sub-genre] about [type of characters or subject] who [core promise or theme]. [Her/His/Their] [series name] series [one detail: number of books, setting or hook]. Before writing full-time, [name] [relevant job or experience], which [how it shows up in the books]. [Name] lives in [region or country, not suburb] with [pet, partner or hobby], and [small, on-brand habit]. Readers who [want X] will find [what they get]. To get [free story or news], visit [website name].

Back cover template (about 50 words)

[Name] is the author of [title or series]. [One credential or experience line]. When not writing, [name] can be found [on-brand activity] in [region].

One-line social bio template

[Genre] author | [hook or trope] | [series or newest title] | [where to find more]

Guest post and press template (about 70 words)

[Name] is a [genre or subject] author whose books include [title]. [Credential directly relevant to the topic you are writing or speaking about]. [One outcome-free credibility marker, such as years in the field or a recognised qualification]. Find [name]’s books at [website name].

Sample author bios by genre

The tone of your bio should feel like the opening page of your books. These examples are invented and are here to show voice, not to be copied.

Genre	Tone	Lead with	Avoid
Romance	Warm, playful, emotional	Tropes, heat level and the promise of a happy ending	Dry career history
Thriller and crime	Taut, confident	Relevant background, setting, pace	Cute details that clash with the mood
Fantasy and science fiction	Imaginative, specific	The world, the series, the type of adventure	Vague phrases like “epic tales”
Non-fiction and self-help	Clear, credible	Qualifications and practical experience	Claims you cannot support, results promises
Children’s books	Gentle, friendly	Why you write for children, any work with them	Personal details about your own children

Romance example

Tessa Lowry writes small-town romantic comedies full of grumpy heroes, meddling neighbours and kisses worth the wait. Her Harbour Lane series follows five friends who keep falling for exactly the wrong person. Tessa lives by the coast with a rescue greyhound who is unimpressed by her plot twists, and she believes every story deserves a happy ending.

Thriller example

Marcus Hale spent twelve years working in port logistics before he started writing about what can go missing between one dock and the next. His Kestrel Wharf thrillers are fast, tightly plotted and set in the kind of places most people only pass through at night.

Non-fiction example

Dr Priya Anand is a registered dietitian with fifteen years of clinical experience. She writes plain-English guides to everyday nutrition for busy adults, built on current evidence and realistic habits rather than quick fixes.

Notice what each one does: genre or subject in the first sentence, one reason to trust the author, one human detail, and no promises about results.

Author bio for first-time authors

You do not need awards or a list of titles to write a strong bio. If you have no publishing credits yet, use one of these instead:

• Your reason for writing. “After twenty years of reading crime novels on the train, she finally wrote one.”
• Relevant life experience. A nurse writing medical romance, a former teacher writing middle-grade adventure.
• Your setting or subject. “Raised in a farming family, he writes rural mysteries.”
• What readers get. “Her debut is for anyone who loves second-chance romance with a slow burn.”

Avoid apologising for being new (“aspiring author”, “this is my first attempt”). A debut is something to announce, not excuse. Update the bio as your list grows.

Pen name bios and privacy

If you write under a pen name, the bio belongs to that name and its brand. It should be truthful in spirit, but it does not need to reveal your legal name, exact location or day job. Our guide to using pen names covers how far to separate identities and when to keep them linked.

Whether or not you use a pen name, keep these out of every public bio:

• Your personal email address or phone number. Use a contact form on your website or a dedicated author address instead.
• Your home street, suburb or small town if it would make you easy to find.
• Your children’s names, schools or ages.
• Your employer’s name, if you would rather colleagues did not find your books.
• Dates or details that are often used in security questions, such as a birth date or your first pet’s name.

Our guide to online security for authors explains why these details matter and how to protect your accounts.

Step-by-step: write your master bio

1. Write one sentence saying what you write and for whom.
2. List three credibility points: experience, series details, recognised qualifications or a strong reason for writing.
3. List three personal details you are happy to share publicly, then choose the one that best fits your genre.
4. Draft a 250-word master bio in the third person.
5. Cut it to 120 words for Amazon and the book’s “About the author” page.
6. Cut it again to 50 words for the back cover and press.
7. Write a one-line version for social profiles.
8. Check every version against the privacy list above.
9. Read each version aloud and remove clichés such as “passionate storyteller” and “lifelong lover of books”.
10. Save all versions in one document and update them whenever you release a book.

Your bio works hand in hand with your blurb and your website. See our guides to writing a book blurb and building an author website for the pieces around it, and our author platform guide for how they fit together.

Common mistakes

• Burying the genre. If readers reach the third sentence before they know what you write, many will stop.
• Writing a CV. Degrees and jobs belong only if they support the books.
• Exaggerating. Calling yourself “bestselling” without a clear, honest basis can damage trust and may break store rules. State facts instead.
• Promising results. Non-fiction bios should describe experience, not guarantee outcomes for readers.
• Clashing tone. A jokey bio on a dark thriller, or a stiff one on a romantic comedy, sends mixed signals.
• Oversharing. Personal contact details and family specifics put your privacy at risk.
• Letting it go stale. A bio that still says “her debut novel is coming soon” two years later looks neglected.

Sources this guide draws on: Amazon KDP Help on Author Central features and biographies; Instagram and X profile settings; publishing industry guidance on author bio length and tone, including Publishing.co.uk; all sample bios are invented for this guide.

Frequently asked questions

What should be included in an author bio?

Include what you write, one or two reasons readers can trust you, and one personal detail that suits your genre. Optionally finish with where readers can find more of your books. Leave out anything that does not help a reader decide to try your work.

Should an author bio be in first or third person?

Third person is standard for book covers, Amazon and press, because others often reuse it. First person suits your own website and social profiles, where readers expect your voice. Keeping a third-person master bio makes it easy to adapt.

How long should an author bio be?

It depends where it appears. A back-cover bio is often 40 to 80 words, an Amazon or “About the author” bio around 100 to 200 words, and a website About page longer. Social bios are a single line within each platform’s character limit.

How do I write an author bio with no experience?

Focus on why you write, relevant life experience, your setting or subject, and what readers will enjoy. Present your debut confidently rather than apologising for being new. Update the bio as you publish more books.

Can I use a photo with a pen name bio?

Yes, but it does not have to be your face. Many authors with pen names use an illustrated avatar or a brand image that suits their genre. Only use a real photo if you are comfortable with being recognised.

How often should I update my author bio?

Review it whenever you release a book, start a new series or gain a relevant credential. A quick check every few months also catches outdated details. Update every version, not just your Amazon page.

Your author bio is small, but readers see it at the exact moment they are deciding whether to take a chance on you. Write one honest master version, tailor it for each place it appears, keep it safe and keep it current.