Learning how to write a query letter means learning how to present your book clearly in about one page. Agents read quickly, often between other work, so your letter must name your book, show its story or idea, and prove you are easy to work with. This guide walks through the structure, personalisation, comps, and the common mistakes that stop a good book getting read.
What Agents Want From a Query Letter
A query letter is a professional introduction, not a sales pitch to a reader and not a full summary of your plot. Its job is to make an agent ask for pages. To do that, it has to answer five questions fast: What is the book called? What category and genre is it? How long is it? What is it about? And why are you the person to write it?
Most query letters run to about 300 to 400 words in total. A letter that is much shorter often leaves out the story. A letter that is much longer often buries it under backstory, themes, and career history. Aim for a letter that fits on one screen, with short paragraphs and clear white space.
Always follow the submission rules for each agency. One agent wants the letter pasted into an email with sample pages below it. Another uses a form with separate boxes for the letter, a synopsis, and your bio. Sending the right material in the right shape is the first test of professionalism, and it costs you nothing but attention.
Keep your tone plain and confident. You do not need to claim your book will be a bestseller. Describe it so clearly that the agent can picture the reader for it.
How to Write a Query Letter, Part by Part
A standard query has four parts in order: the hook and book details, the book paragraph, a short paragraph on comps and fit, and a bio with a polite close. Some writers put the book details at the end instead of the start. Either order can work, as long as nothing important is missing and the story paragraph carries the letter.
The Hook and Book Details
Open with your book, not with yourself. A strong first line names the title, the category, the genre, and the word count, or it drops the reader straight into the best hook of the story and gives the details in the next line. For example, a writer might say their novel is a contemporary mystery of about 80,000 words, then move into the story. Exact word counts vary by category, so use the real count of your finished manuscript, rounded sensibly.
Word count matters because it signals whether the book fits its category. Picture books, middle grade, young adult, and adult novels all have very different normal ranges, and a count far outside your range will raise questions before the agent reads a page. If your book is unusually long or short, the honest fix is usually revision.
The Book Paragraph
This is the heart of the letter, usually 150 to 200 words. For fiction, cover your main character, their goal, the obstacle, the stakes, and the choice they face. Write it like strong cover copy, not like a chapter summary. Name your character early, keep subplots out, and stop before the ending. The agent needs to feel the engine of the story, not read a list of everything that happens.
The skill here is close to cover copy, which is why it helps to study how to write a book blurb that sells alongside your query draft. The two pieces share a hook, a premise, and stakes. The difference is the audience: a blurb speaks to readers in the voice of the book, while a query speaks to a professional who also needs your category, word count, and comps.
For nonfiction, the book paragraph works differently. Lead with the problem or question your book answers, the audience who needs it, your approach, and what the reader will be able to do or understand by the end. If your book depends on your expertise or your story, say so here in one or two plain sentences, and save the detailed chapter outline for the proposal if one is requested.
The Bio and Close
Keep your bio short and relevant. Include writing credits if you have them, work or life experience that connects to the book, and relevant memberships or training. If you have no credits yet, that is fine. A single honest sentence about who you are and where you live is better than padding. Never invent credits, awards, or endorsements.
Close politely and simply. Thank the agent for their time, say that the full manuscript is available on request if that is true, and sign off with your real name and contact details. A clean close leaves the agent with one easy next step: asking for pages.
Personalisation, Comps, and Getting the Details Right
Personalisation means showing, in one or two lines, why you chose this agent. Mention a book they represent that sits near yours, a stated interest on their wish list, or a talk or interview where they described looking for your kind of story. Keep it specific and brief. A generic line about admiring their agency fools no one, and a long flattering paragraph wastes the space your story needs.
Comparison titles, usually called comps, help an agent place your book. Choose two titles if you can, ideally books from the last few years in your category that sold well without being once in a generation hits. Your comps should signal audience and shelf, not claim your book is as famous as theirs. A useful pattern is to say your book will appeal to readers of one title for its setting and another for its voice or structure.
Choose comps honestly. Giant hits sound naive, and unknown titles do no work. If you cannot find a recent comp, use an older book for tone plus a recent book for market fit, and keep the claim modest.
Proofread the whole letter as if it were your first chapter, because to the agent it is. Check the agent name, the agency name, your title, and your word count character by character.
Common Rejection Triggers to Fix Before You Send
Many rejections are not about talent. They are about signals that make an agent stop early. The most common is a query for an unfinished book. Fiction should be complete and revised before you query, because an agent who loves your pages will ask for the full manuscript quickly. Querying a first draft, or a book that is still being written, risks burning your one first impression with that agent.
The second trigger is a book paragraph that reads like a back cover full of questions but contains no actual story. Lines about secrets, destinies, and worlds colliding tell the agent nothing. Replace every vague phrase with the concrete version: who does what, to whom, and at what cost. The third trigger is a letter that argues with the market, insults other books, or explains at length why publishing is broken. Confidence is welcome, grievance is not.
Other easy fixes matter too. Do not query the same agent with the same book twice unless they asked to see a revision. Do not send attachments unless the guidelines ask for them. Each query should stand on its own as a calm, complete introduction.
Finally, manage your own process like a professional. Query in small batches, note who you sent to and when, and revise your letter if a batch brings only form rejections with no requests. The pattern across a batch tells you more than any single reply.
Fiction and Nonfiction Queries Are Different
Fiction is sold on the strength of the finished manuscript, so the query letter and sample pages carry almost all the weight. Your letter must prove you can build a story: a character, a conflict, and rising stakes, all in a voice that matches the book. Platform and following can help, but they rarely rescue a fiction query whose story paragraph is flat.
Nonfiction is often sold on a proposal, so the query letter also has to sell the idea, the audience, and you. Agents will want to know why this book needs to exist now, who will buy it, and why you are credible on the topic. Your experience, your work, and any audience you already reach carry real weight here, so state them plainly and back them with specifics.
Memoir sits between the two. Like fiction, it usually needs a complete manuscript and a strong story arc. Like nonfiction, it depends on your life and voice being the subject, so the letter must show both the events and the change they caused.
It is also worth deciding, before you send a single query, whether the traditional route is the route you actually want. Querying takes months, most books are rejected many times, and a publishing deal trades control and a share of income for reach and support. Reading a clear comparison of self-publishing vs traditional publishing before you start can save you a year of querying a book you would rather publish yourself, on your own schedule.
How Folio Authors Helps If You Choose to Publish Yourself
Some authors query because they want a traditional deal. Others query, learn from the process, and decide they would rather keep control and move faster. Folio Authors is publishing software for independent authors in that second group, bringing assessment, editing, formatting, cover design, and publishing into one dashboard while you keep 100 percent of your rights and royalties.
The same honesty that makes a good query makes a good publishing plan, so start by checking the book itself: your first assessment is free, and it includes a 500 word editing sample with no card needed. That gives you a grounded view of your opening chapters, the very pages an agent would judge first, whether you later query with them or publish them yourself.
If you publish, the Standard plan is $150 one time and unlocks all Folio tools, with publishing charged separately, including Amazon KDP at $99 one time and a free ISBN included. Whatever route you choose, the work is the same at the start: a finished book, a clear one page case for it, and pages strong enough to back the case up.
Frequently Asked Questions
How long should a query letter be?
Most query letters run to about 300 to 400 words, roughly one page. That is enough for the book details, a story paragraph of 150 to 200 words, comps, and a short bio. If yours is much longer, cut backstory and career history first.
Does my book need to be finished before I query?
For fiction and memoir, yes. Agents expect a complete, revised manuscript they can request in full. Nonfiction is the exception, since it is often sold on a proposal, but you still need sample chapters and a clear outline.
What are comps in a query letter?
Comps are comparison titles that show where your book sits in the market. Pick recent, successful books in your category that share your audience, tone, or setting. Avoid giant hits and unknown titles, since neither helps an agent place your book.
How many agents should I query at once?
Query in small batches, such as five to ten agents who fit your book well. Track every submission and reply. If a batch brings no requests at all, revise your letter or opening pages before sending the next batch.
What if I have no publishing credits?
Say so simply, or leave the bio to one honest sentence about who you are. Agents sign debut authors every year. A clear letter and strong pages matter far more than a long bio, and invented credits will always hurt you.
The Bottom Line
A query letter that gets read is short, specific, and professional. Name your book and its category, tell the story in one strong paragraph, place it with honest comps, personalise your choice of agent in a line or two, and keep your bio brief. Follow each agency guidelines exactly, and query only when the manuscript behind the letter is finished and revised.
Treat every rejection as information, not verdict. Improve the letter in batches, and remember that querying is one route to readers, not the only one. Your pages are what keep the promise your letter makes.
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