How to Write a Bio: Structure, Examples & Length
A bio is a short piece of writing that introduces you — your role, your background, and why you’re worth a reader’s attention — used on a website, a social profile, a company directory, or next to a byline. This guide covers whether to write it in first or third person, how long it should be on each platform, a four-step structure, and worked examples.
If you specifically need a resume intro or a LinkedIn “About” section, those have their own conventions — see what a resume summary is or LinkedIn summary examples instead.
First person or third person?
Use first person (“I help…”) for anything social or personal: LinkedIn, a personal website, a social media profile. It reads as your own voice and feels direct.
Use third person (“Jane Doe is…”) for anything formal or distributed by someone else: a company team page, a press release, a conference program, a book jacket, or a byline. It reads as a neutral introduction written for you, which is exactly what those contexts expect — even when you wrote it yourself.
Pick one and stay consistent for the full piece; switching partway through is the fastest way to make a bio feel unedited.
How long should a bio be?
There’s no single right length — it depends entirely on where the bio will appear:
| Platform | Typical length |
|---|---|
| X / Twitter bio | 160 characters, one line |
| LinkedIn About section | Up to 2,600 characters, 200-300 words |
| Conference or event program | 1-2 sentences |
| Speaker introduction (read aloud) | 3-4 sentences |
| Website “About” page | 100-300 words |
| Author bio (book jacket) | 50-100 words |
| Company team page | 2-4 sentences |
The most common mistake isn’t writing too little — it’s writing one version and pasting it everywhere. A bio written for a 300-word About page reads as bloated at 160 characters, and a one-liner reads as thin on a full About page. For a comparison against other short-document types, see our breakdown of summary lengths.
How to write a bio in 4 steps
- Open with your name and role. State who you are and what you do in the first sentence — don’t make a reader wait for it.
- Add your focus or specialty. One line on what you actually work on, not a generic job title.
- Include one proof point. A specific result, project, or credential — pick the single most relevant one rather than listing several.
- Close with a personal detail or a call to action. A genuine interest outside work makes you memorable; a link to your site or contact info gives a reader somewhere to go next.
Bio examples
Work or website bio (first person, ~80 words):
I’m a UX researcher who spends most of my time watching people struggle with software so it doesn’t have to be that way. Over the last six years I’ve run usability studies for two Y Combinator startups and a Fortune 500 retail team, and I specialize in turning messy interview notes into design decisions a team can actually act on. Outside of work I restore old bicycles, badly. Get in touch at [email].
LinkedIn-style bio (first person, ~60 words):
I help early-stage SaaS teams find their first 100 paying customers. Over the past five years I’ve built and run outbound sales programs for three startups, including one that grew from $0 to $2M ARR in 14 months. I’m most interested in problems at the intersection of sales and product — where a bad handoff between the two loses more deals than a bad pitch does.
Author or speaker bio (third person, ~50 words):
Maria Chen is a science journalist and the author of two books on climate adaptation. Her writing has appeared in The Atlantic and Scientific American, and she speaks regularly at environmental journalism conferences. She lives in Portland, Oregon, and is currently working on a book about coastal migration.
Mistakes to avoid
- Using the same version everywhere. A bio written for one platform’s length rarely fits another without editing — see the length table above.
- Leading with your job title instead of your focus. “Marketing Manager” says less than “I help mid-size retailers turn ad spend into repeat customers.”
- Listing every accomplishment. One strong proof point reads as confident; five reads as a resume with extra adjectives.
- Skipping the personal detail. A bio with zero personality is easy to skim past and hard to remember.
- Mixing first and third person. Pick one point of view and keep it for the entire piece.
Turn one bio into every length you need
Once you have a solid full-length bio, cutting it down for a shorter platform is a summarizing problem, not a rewriting one. Paste your longest version into our free AI text summarizer to pull out the core points, then trim that down to fit a LinkedIn About section, a website bio, or a one-line conference intro — without starting from scratch each time or losing the details that make it sound like you.
Frequently asked questions
How do I write a bio about myself? Open with your name and role, add your specialty, include one concrete accomplishment, and close with a personal detail or a way to reach you — see the four-step structure above.
What is an example of a good bio? One that states who you are and what you do in the first sentence, backs it up with a specific result instead of a generic claim, and matches the length its platform expects. See the worked examples above for a work bio, a LinkedIn-style bio, and an author bio.
What is a good simple bio? For most platforms, three to four sentences: your name and role, your focus, one accomplishment, and either a personal detail or a call to action.
Should I write my bio in first or third person? First person for anything social or personal — LinkedIn, your own website. Third person for anything formal or distributed by someone else, like a conference program or a book jacket.