Book subtitle examples: 32 real nonfiction subtitles, sorted by pattern

Every example below is a real book, quoted with its published title and subtitle. Well-known titles were checked against library catalog records on Open Library; books published by Scribe Media were checked against pages on scribemedia.com. Some books changed subtitles between editions, so you may see a different one on your shelf.

What a subtitle has to do

Amazon KDP's metadata guidelines define a subtitle as "a subordinate title that contains additional information about the content of your book". Scribe's guide to writing a book subtitle is more specific: the title hooks the reader, and the subtitle explains why they should read the book, by saying who the ideal reader is and what benefit they get or what problem it solves. Its five tests for a good subtitle are that it gives context, holds attention, is searchable, is easy to read and say, and is short and specific.

For choosing the title itself, and the copyright and trademark rules, see our guide on how to choose a book title and subtitle. This page is about the second line.

Pattern 1: the promise

The subtitle states the result the reader gets. This is the most common pattern for how-to books, because the promise is the reason to buy. It works best when the result is concrete enough to picture.

Look at the verbs: build, break, clarify, master, shift. A promise subtitle usually starts with what the reader will do. The Getting to Yes subtitle adds a second move worth copying: it removes the reader's fear ("without giving in") as well as stating the result.

Scribe's subtitle guide uses People-First Culture to show how much the last few words matter. A shorter draft, "Build a Lasting Company by Shifting Your Focus", raises the question "shifting it from what to what?" The final four words, "from Profits to People", answer it and tell the right reader the book is for them.

Pattern 2: the reader

The subtitle makes the reader recognize themselves. It can name them outright or imply them so clearly that it does not need to. Scribe's subtitle guide advises the second: you would not write "A Book for Ambitious, People-Focused Business Leaders Who Want to", but a subtitle about building a lasting company makes the audience obvious.

Quiet names its reader (introverts) and the tension they live with. Great on Their Behalf uses one small word, "yours", to turn a general argument about school boards into a book for the board member holding it. If your reader is a specific role, as in defining your one reader, this pattern is often the strongest.

Pattern 3: the how or the why

The subtitle names the mechanism or the explanation. This suits thought leadership, where the idea is the selling point, and books whose title is a single coined word or concept that needs unpacking.

Two shapes recur: "Why [the problem happens]" and "How [the thing works]". The strongest versions pair the two, as The E-Myth Revisited does: why most small businesses do not work, and what to do about it. Note how often the one-word titles (Influence, Grit, Drive, Switch) lean entirely on the subtitle. Scribe's subtitle guide makes the same point about Marketing to Mindstates: the title is memorable, but means little until the subtitle explains it.

Pattern 4: the number

A number signals structure and makes the book feel finite. In most well-known examples the number sits in the title and the subtitle explains it; sometimes the number is in the subtitle itself.

Only use a number if the book really is built on it: seven habits, twenty-one ways, five dysfunctions. Scribe's subtitle guide notes that the Five-Hour Workday subtitle does essential work, because without it readers could assume the title was arguing for a lazy lifestyle.

Pattern 5: the story

Memoirs and story-led books often use the subtitle to label the kind of book, or to sum up the arc in a phrase.

"A Memoir" is the plainest subtitle there is, and it works when the title is strong enough on its own. The "from X to Y" shape in Start Where You Are is the memoir version of a promise: it tells the reader where the story begins and ends. Walden shows the older convention of a subtitle joined with "or"; library records list editions both with and without it. If you are writing a memoir, our guide on how to write a memoir covers choosing the slice of life the subtitle will describe.

One book, three subtitles

Subtitles are not carved in stone. Open Library's catalog records for Robert Cialdini's Influence show a 1984 edition from Morrow subtitled How and Why People Agree to Things, textbook editions subtitled Science and Practice, and later trade editions subtitled The Psychology of Persuasion. Same core book, three different second lines, each aimed at a different reader. The Lean Startup and The 7 Habits also appear in catalog records with more than one subtitle.

The lesson for a first-time author: the subtitle is the most adjustable part of your book's identity. Pick the best one you can, but do not let it hold up the writing.

How to write and test yours

Write it

1. Start literal. Scribe's subtitle guide suggests beginning with a plain description of the book: who it is for and what it does for them. Our book promise guide gives you that sentence.
2. Pick a pattern. Promise for how-to books, reader for books aimed at a role, how or why for idea books, number only if the structure is truly numbered, story for memoir.
3. Cut redundancy. If the title already says "retirement", the subtitle need not. If "your kids" implies parents, drop "parents".
4. Get specific. Replace general words with the exact change. "From profits to people" beats "shifting your focus".
5. Match the tone of the book. Scribe's guide shows how "spill the beans" and "tell you the truth" mean the same thing with a different feel.

Test it

• The reader test. Say the title and subtitle to three people who match your reader and ask what they think the book will do for them. If they describe your promise, it works.
• The search test. Scribe's subtitle guide suggests searching your top choices on Amazon to see what comes back, and on Google to catch meanings you did not intend.
• The cover test. The same guide notes that the subtitle has to fit on the cover. Shrink your cover mockup to thumbnail size and see whether the subtitle is still readable.
• The market test (optional). Scribe's guide recommends real market data over friends and family or social media polls, for example small ads or paid survey panels, if you want to compare two finalists.

The book idea starter checks your working subtitle against Amazon's length limit and banned promotional words, and shows it beside your reader and promise so you can see whether they agree.

Colons, capitals and Amazon's rules

• Amazon KDP. Enter the subtitle in the subtitle field, not in the title field. Title and subtitle together must be fewer than 200 characters, and the subtitle follows the same rules as the title: no sales rank claims such as "bestselling", no promotional words such as "free", no repeated generic keywords. The guidelines also say the title, subtitle and author name on your cover should match what you enter (KDP metadata guidelines).
• The colon. In running text and citations, a colon separates title and subtitle. Purdue OWL's APA reference guide shows the pattern "Title of work: Capital letter also for subtitle".
• Capitals. The Chicago Manual of Style's Q&A on capitalizing titles says its title-case rules are for titles mentioned in text and citations, and that on a cover or title page design takes precedence. It also notes that from the 18th edition (2024), prepositions longer than four letters are capitalized in titles.

If you would like a second opinion on your title and subtitle from people who have named many books, Scribe Media, which makes this site and sells book coaching, ghostwriting and publishing, offers a free call.