Em Dash vs En Dash: The Complete Guide to Using Dashes Correctly

Em Dash vs En Dash: The Complete Guide to Using Dashes Correctly

You're deep in a manuscript edit, and you hit a wall. Should that mark be a hyphen, an en dash, or an em dash? You've typed two hyphens together and hoped nobody would notice. You've stared at a submission guideline that says "use en dashes for number ranges" and had no idea what that actually looked like on the page.

You're not alone. Even seasoned authors mix these up, and the style guides don't always agree with each other, which doesn't help. Ask five editors what an en dash is for, and you'll get five slightly different answers, all correct, all pointing at a slightly different corner of the rule.

This guide sorts it out for good. By the end, you'll know exactly which dash to reach for, how to type it on your keyboard or phone, and how to keep your manuscript consistent from the first page to the last, whether you're following Chicago, AP, or your publisher's house style. You'll also see where these marks tend to show up in a manuscript specifically, since fiction and memoir writing lean on the em dash far more than a news article ever will.

Let's decode the dashes.

None of this is really about pedantry for its own sake. A manuscript with inconsistent dashes doesn't read as "wrong" to most readers in any conscious way, but it does read as slightly less polished, and that impression lands before a single word of the story itself has had a chance to land. Getting the small marks right is one of the quietest, most reliable ways to make a manuscript feel professionally prepared.

The three marks: hyphen, en dash, and em dash

Before the rules, a quick visual check, because all three marks look similar at a glance, and that's exactly why writers confuse them. Set side by side, the difference in length is obvious. Buried in a paragraph at normal reading size, it isn't.

• Hyphen (-): the shortest mark. It joins words together, like "well-known" or "self-published", or splits a word at a line break.

• En dash (–): a touch longer than a hyphen, roughly the width of the letter N. It shows a range or a connection between two things of equal weight.

• Em dash (—): the longest of the three, about the width of the letter M. It sets off a phrase, marks an interruption, or adds emphasis.

If you've ever searched for "the long hyphen symbol" or wondered what the sign for a hyphen even is, this is the family tree: hyphen for joining, en dash for spanning, em dash for pausing. Keep that mental model handy, and most decisions get much easier.

Why does this trip up so many otherwise careful writers? Mostly because a standard keyboard doesn't have a dedicated en dash or em dash key. You get one hyphen key and nothing else, so unless you've learned a shortcut or your word processor autocorrects for you, every one of these marks ends up looking like a hyphen on the page, whatever the writer actually intended. That's the root problem this guide is here to fix.

Where these marks actually come from

It helps to know these aren't arbitrary rules invented by a style committee. The names come straight from old-fashioned metal type. Printers measured a dash by how much horizontal space it took up relative to a specific letter's width in a given typeface, and the em (the width of a capital M) and the en (the width of a capital N) became the standard units. A hyphen was never part of that measuring system at all. It's a separate, older mark that predates modern typesetting and was always meant purely for joining words or breaking them across a line.

That history explains why the rules feel so specific. An en dash isn't "a slightly longer hyphen" by accident, it's a deliberately different width chosen to signal a different grammatical job. Once typewriters arrived, with a single key for all three marks, that distinction started to blur, and it's been blurring ever since. Word processors and modern publishing software have brought the distinction back, which is exactly why the three marks matter again for anyone submitting a manuscript today.

Em dash usage rules: the power punctuation mark

The em dash is the most versatile mark on this list, and the most overused. Use it on purpose, not out of habit.

Setting off a parenthetical thought

When you want to insert an idea that carries more weight than parentheses but feels less formal than a comma, an em dash does the job. Example: "The final chapter, the one she'd rewritten four times, was the one readers remembered most."

Compare that to the same sentence with parentheses: "The final chapter (the one she'd rewritten four times) was the one readers remembered most." Technically both are correct. The em dash version reads as more emphatic, more present-tense, more like the narrator is leaning in to tell you something. Parentheses read as a quieter aside. Choosing between them is a voice decision as much as a grammar one.

Marking an interruption or a sudden break

This is where an em dash earns its keep in dialogue. Example: "I was going to tell you, but never mind." It also works outside dialogue, for a character's internal thought that cuts itself off mid-sentence, which is common in memoir and literary fiction, where the narrator second-guesses themselves in real time on the page.

Dashes in dialogue: a closer look

Fiction writers reach for the em dash in dialogue more than in any other context, and it's worth spending a moment on the difference between an interruption and a trailing-off, because they're punctuated differently and mixing them up is one of the more common dialogue errors an editor will flag.

An interruption, where one character cuts another off, or a thought is stopped abruptly, takes an em dash: "I told you not to—" "I know what you told me." The dash sits right at the point the speech stops, with no space before the closing quotation mark.

A trailing-off, where a character's voice simply fades rather than being cut off, takes an ellipsis instead: "I just thought maybe…" These read as different actions on the page. An em dash is sharp and sudden. An ellipsis is soft and uncertain. Using an em dash where the moment actually calls for an ellipsis makes a hesitant character sound abruptly cut off instead, which changes how the reader hears the line.

The same distinction applies inside a character's own narration. A thought that gets interrupted by an external event takes an em dash. A thought that simply drifts off unfinished takes an ellipsis. It's a small distinction, but it's one beta readers and editors notice even when they can't always articulate why a line of dialogue feels slightly off.

Adding emphasis or a dramatic pause

An em dash can stand in for a colon when you want a stronger pause before the payoff. Example: "She opened the envelope and found exactly what she'd feared, nothing." A colon here would be grammatically fine and slightly flatter. The em dash slows the reader down for half a second longer, which is exactly the effect you want right before a reveal.

Expert tip: in formal or academic writing, lean on commas or parentheses for parenthetical information, and save the em dash for the moment that genuinely deserves the extra beat.

Replacing missing words or letters

Less common in modern prose, but worth knowing: an em dash can stand in for a deliberately omitted word or letter, usually in dialogue or a redacted document. Example: "Mr. S— arrived late to the meeting." Use this sparingly. It can read as old-fashioned if you lean on it too often, and in professional or published writing, a single em dash or a bracketed note like "[redacted]" usually reads more cleanly than a string of them.

The common pitfall: overusing em dashes

Too many in one paragraph and your prose starts to feel breathless, like a text message sent in a hurry. A decent rule of thumb: no more than two per paragraph in formal writing, and never two in the same sentence unless you're doing it deliberately for effect.

Here's what that looks like in practice. A paragraph leaning too hard on the mark might read: "She walked into the room, tired, frustrated, ready to give up, and saw him standing there, smiling, like nothing had happened, like the last six months hadn't happened at all." Every pause in that sentence is doing the same job, which means none of them stand out. Revised with a mix of punctuation, it reads more like this: "She walked into the room. Tired. Frustrated. Ready to give up. Then she saw him standing there, smiling, as if the last six months hadn't happened at all." The second version varies the rhythm instead of flattening it, and the single remaining comma-based clause actually lands with more weight because it isn't competing with three others just like it.

If you're describing a character and reaching for an em dash after every trait, it's worth slowing down and varying the sentence structure instead.

Em dash vs colon vs semicolon: how to choose

All three of these marks can link two related ideas in a single sentence, which is exactly why writers often default to whichever one they reach for out of habit rather than the one that actually fits. Here's a fast way to tell them apart.

A colon promises something specific is coming, usually a list, an explanation, or a direct payoff: "There's only one thing you need to remember: practice." The reader knows exactly what kind of thing follows a colon before they get there.

A semicolon joins two complete, closely related sentences without a conjunction, and it reads as measured and formal: "The manuscript was ready; the publisher wasn't." Semicolons work well in narration with a slower, more deliberate voice, and they tend to feel out of place in casual dialogue.

An em dash does a looser version of both jobs, but with more energy and less formality. It can introduce a payoff as a colon does, or link two related statements like a semicolon does, but it always carries a slightly more conversational, in-the-moment tone. "There's only one thing you need to remember: practice" and "There's only one thing you need to remember, practice" are grammatically similar, but the second one reads faster and more like natural speech.

If you're not sure which to use, ask what register the sentence is going for. Formal and measured points toward a colon or semicolon. Immediate and conversational points toward an em dash.

En dash usage rules: the unsung hero

The en dash gets overlooked constantly, but it has two jobs a hyphen simply can't do, and getting them right is one of the fastest ways to make a manuscript look professionally typeset rather than self-published in a hurry.

Number and date ranges

Use an en dash to connect numbers, dates, or times that represent a span. Example: "Read chapters 5–8 for next week." Example: "The festival runs June 10–12." Example: "The office is open 9 am–5 pm." A hyphen in a range looks like a minus sign and reads as a typo to anyone who notices. If you could say "to" instead, reach for the en dash.

Compound adjectives with multi-word elements

When one part of a compound adjective is already an open compound or a proper noun, the en dash connects it to the rest of the phrase. Example: "pre–World War II architecture." Example: "the New York–London flight." A hyphen here (pre-World War II) is technically wrong, even though almost everyone writes it that way without thinking twice. This is one of those rules that trips up experienced editors as much as beginners, because the visual difference between a hyphen and an en dash in this position is genuinely subtle.

Expert tip: ask yourself, "Am I connecting a single word to a phrase that already has its own internal space?" If yes, that's your signal for an en dash.

Connections and relationships between equals

Use an en dash to show a link or contrast between two things of the same weight, like a score or a rivalry. Example: "The final score was 98–95." Example: "The north–south highway is under construction." Example: "The Obama–Biden years." This is also where an en dash shows up in fiction craft, connecting two characters who define each other by contrast, or two settings pulling a story in opposite directions. It's a small mark doing a lot of conceptual work: "the London–Paris rivalry" tells the reader these two things are locked in relationship to each other, in a way that a simple "and" or "versus" doesn't quite capture in the same compact space.

When not to use an en dash

Skip it with "from…to" or "between…and" constructions. Write "from 2010 to 2015", not "from 2010–2015". Doubling up the "from" and the dash is one of the more common errors in this category, since the two constructions are trying to do the same job. And don't reach for an en dash with a simple compound adjective like "well-known". That's a hyphen's job, not an en dash's.

Hyphen: a quick clarification

The hyphen is the workhorse of the three, but it's not technically a dash at all. Keep the distinction clear:

• Hyphen (-): joins words ("state-of-the-art", "self-esteem") or splits a word across a line break.

• En dash (–): spans numbers or connects a multi-word modifier to another word.

• Em dash (—): sets off a phrase or marks a break in thought.

A classic mix-up: "high-school students" takes a hyphen, but "high school–college partnership" takes an en dash, because the en dash is connecting a two-word phrase to the rest of the sentence, not just one word. When in doubt, check a dictionary. If the compound isn't listed, you probably need a dash rather than a hyphen, and the rules above will tell you which one.

Hyphens also show up constantly in names and titles, which is its own small minefield. Double-barrelled surnames ("Day-Lewis"), certain job titles ("editor-in-chief"), and compound numbers written out in full ("twenty-one") all take a hyphen, not a dash, even though some of these read as if they should be longer marks given how much they're doing grammatically. The test is the same one from earlier in this guide: if you could substitute the word "to" and the sentence would still make sense, you're looking at an en dash. If you can't, and the mark is simply joining two elements into a single unit, it's a hyphen.

Style guide showdown: AP vs Chicago vs MLA vs APA

Different style guides treat the em dash and en dash differently, and this is where a lot of writers trip up when they're switching between a journalism brief and a manuscript. Here's a quick reference.

If you're submitting a manuscript, ask your publisher which guide they follow before you format a single dash. Chicago is the standard most Australian and international trade publishers default to, so if nobody's told you otherwise, that's your safest bet. Style guides do get revised, so if you're working to a specific edition for a client or a submission, it's worth checking the publisher's current style sheet rather than relying on memory, since spacing conventions in particular have shifted before and can shift again.

It's worth understanding why these conventions diverge rather than just memorising the table. AP style grew out of newspaper columns, where a closed-up em dash could sit awkwardly against a narrow column width, so spacing it out improved readability at speed. Chicago grew out of book typesetting, where the wider margins of a printed page make a closed-up em dash sit comfortably without looking cramped. Neither convention is more "correct" in an absolute sense; they're each suited to the medium they were built for, which is exactly why a manuscript formatted for a newspaper op-ed and one formatted for a novel can look meaningfully different even when every underlying grammar rule is identical.

If you're working with an editor for the first time, it's a fair question to ask upfront which convention they'll apply, since it saves a pass of reformatting later. Most publishers will tell you outright, and if they don't, asking is a normal, expected question rather than an awkward one.

How to type an em dash or en dash on any device

Stop copying and pasting dashes out of a search result. Here's the shortcut for whatever you're typing on.

Expert tip: on a laptop without a numeric keypad, the Alt codes won't work. The Win +. shortcut on Windows 11 is the easiest fix, and most word processors will autocorrect two hyphens into an em dash if you let them, which is worth switching on if you write dialogue often.

If you use the same handful of dashes constantly, a text expansion shortcut that turns a short snippet like "; em" into an em dash and "; en" into an en dash can save a genuine amount of time across a full manuscript, especially if your platform of choice doesn't autocorrect them for you.

Common mistakes and how to fix them

Even careful writers slip on these.

Using a hyphen instead of an en dash for a range Wrong: "the meeting is 2-3 pm." Right: "The meeting is 2–3 pm." If you can say "to", it's an en dash.

Putting spaces around an em dash in the wrong style Chicago closes the em dash up on both sides. AP adds spaces. Know which guide you're writing for and stay consistent for the whole document, not just the first few pages. Mixing spacing conventions partway through a manuscript is one of the more obvious tells that a document has been stitched together from different drafts.

Using two hyphens instead of an em dash Double hyphens (--) are a leftover from typewriters. In digital writing, particularly in a submitted manuscript, they read as unpolished. Most word processors will convert them automatically if autocorrect is switched on.

Forgetting the en dash in compound adjectives "Pre-World War II" (hyphen) should be "pre–World War II" (en dash), because "World War II" is an open compound and the en dash signals that "pre" modifies the whole phrase, not just "World".

Overusing em dashes for every single pause A paragraph with three or more em dashes starts to feel jittery, whatever the surrounding sentences are actually about. Before you use one, run through a quick three-question check: is this a genuine interruption, or just a pause that a comma could handle just as well? Would the sentence read more clearly as two shorter sentences instead? Have you already used an em dash in the last sentence or two? If the answer to that last one is yes, it's worth finding another way to punctuate this one.

If you're setting a scene and reaching for a string of dashes to cram in detail, it's often a sign the description needs restructuring rather than more punctuation.

Confusing an en dash with an em dash in a range This one's subtler than the others, and it usually shows up in typeset proofs rather than a first draft. A range set with an em dash instead of an en dash ("pages 10—20" instead of "pages 10–20") looks correct at a glance because both marks are longer than a hyphen, but it's still wrong, and a careful proofreader will catch it. If you're formatting a table of contents, an index, or any list of page ranges, it's worth a dedicated check pass just for this, since it's easy to miss among everything else you're checking.

Accessibility and screen readers: what to know

Dashes aren't only a visual choice. They affect how your writing sounds when it's read aloud, which matters more than most style guides acknowledge.

How screen readers handle each mark

• Em dash: most screen readers pause briefly, though some skip it entirely or read it aloud as "dash", which can break the rhythm of a sentence.

• En dash: often read as "to" in a number range, which is genuinely helpful, but it may be skipped or read as "dash" inside a compound adjective.

• Hyphen: usually read as "hyphen" or ignored, depending on the surrounding words and the specific screen reader software in use.

Best practices for inclusive writing

Don't rely solely on a dash to carry meaning. If an em dash sets off a clause that's essential to the sentence, make sure the sentence still holds together without it. For ranges, consider spelling out "to" alongside the en dash when you know the audience includes screen reader users: "the workshop runs June 10–12 (June 10 to 12)." It's a small addition that costs almost nothing in flow and genuinely helps.

If accessibility matters for your project, and increasingly it should, it's worth reading your finished draft back with a free screen reader before you finalise it. Listening to how your dashes actually sound is a different experience from proofreading them visually, and it will often catch an awkward pause you wouldn't have noticed otherwise.

This matters even more if your book is heading towards an audiobook edition. A narrator reading from a printed script will interpret a dash based on context and instinct, which usually works fine, but a text-to-speech engine used for an accessible ebook edition won't have that same judgement. If a sentence's meaning genuinely depends on where the pause falls, it's worth phrasing it so the meaning still comes through even if the dash gets flattened into silence or read aloud as a single word.

A simple way to choose the right mark

Run through these questions when you're stuck:

1. Are you joining two words into one modifier? Yes, use a hyphen ("well-known").

2. Are you showing a range of numbers, dates or times? Yes, use an en dash ("pages 10–20").

3. Are you connecting a single word to a multi-word phrase, like a proper noun? Yes, use an en dash ("pre–World War II").

4. Are you setting off a phrase for emphasis, marking an interruption, or creating a pause? Yes, use an em dash.

5. None of the above? You probably don't need a dash at all. A comma, colon or set of parentheses will likely do the job better.

Test yourself: five quick scenarios

Try picking the right mark before checking the answer underneath each one.

1. "The conference is scheduled for August 15___17, 2026." → En dash. Date ranges always take an en dash, never a hyphen.

2. "She was the top candidate___until the background check revealed a problem." → Em dash. It marks the sudden turn in the sentence.

3. "The pre___Civil War era was tumultuous." → En dash. "Civil War" is an open compound, so the en dash links "pre" to the whole phrase.

4. "My mother___in___law is visiting next week." → Hyphen, in both spots. "Mother-in-law" is a standard hyphenated compound.

5. "The final score was 98___95." → En dash. It shows the relationship between the two numbers.

Where dashes show up in a manuscript

Once you've got the rules down, the next question is usually where these marks actually matter most in a book-length project. Here's where each one tends to surface in fiction and memoir specifically.

Chapter titles and formatting

Chapter and section titles are one place writers get caught out, since a hyphenated subtitle reads differently depending on how you've capitalised it. If you're formatting chapter headings or a book title, it's worth checking our guide on what title case actually is before you finalise your front matter, since the capitalisation rules interact with punctuation in ways that aren't always obvious.

Memoir and first-person voice

Memoir writers lean on the em dash more than most, because it mimics the rhythm of a spoken, first-person voice better than a full stop does. It reads like someone genuinely thinking aloud, catching themselves mid-thought, which is exactly the effect a lot of memoir is going for. If you're working across memoir, autobiography or biography and you're not sure which form fits your project, our breakdown of memoir vs autobiography vs biography is worth a read before you settle on a structure.

Characters built on contrast

An en dash connecting two characters, two settings, or two eras is a small but useful device for signalling contrast without spelling it out. If you're building a character defined mainly by how they differ from another one in your story, it's worth reading up on what a foil character is so the contrast does real work on the page rather than sitting there as decoration, and pairing that contrast with a recurring motif, once you're clear on what a motif is, can add another layer of meaning to the dynamic. 

Setting and description

Dense, dash-heavy description is a common first-draft habit, and it's usually a sign the sentence needs restructuring rather than more punctuation. Our roundup of setting examples from bestselling fiction is a good place to see how published authors handle rich description without leaning on a single mark to do all the work.

Plot turning points

Dashes also tend to cluster around a story's turning point, the moment a plan falls apart or a character makes an irreversible choice. If you're plotting that kind of pivot, our guide to using the hero's journey shows you where those beats usually land in a manuscript, which is often exactly where an em dash earns its place.

Character description

If you're introducing a character and reaching for an em dash after every trait, it's a sign the description could use more variation. Our guide on how to describe a person in writing has plenty of ways to vary the rhythm, so you're not leaning on the same punctuation mark for every single beat.

Getting the punctuation right on a sentence level and getting the structure right on a book level are two different skills, and Sydney Book Publishers works with authors on both, from a single stuck paragraph through to a full manuscript edit.

Tools that help you catch dash errors

You don't have to catch every one of these by eye, and on a full-length manuscript, relying on eyesight alone is exactly how small punctuation errors slip through to a final proof. A handful of approaches are genuinely useful for a full manuscript pass, and most writers get the best results from combining a couple of them rather than expecting any single one to catch everything:

• A grammar and style checker can flag incorrect dash usage, and on most paid tiers it can be set to match a specific style guide.

• A punctuation consistency report across the whole document is useful for spotting where your spacing convention has drifted partway through.

• Readability checks that highlight hard-to-read sentences often flag the same spots where a run of em dashes is doing too much work.

• A text expansion shortcut is worth setting up if you type dashes often and your word processor doesn't autocorrect them for you.

• Most modern word processors have built-in autocorrect for dashes and a special character menu, and their style settings can usually be configured to match AP or Chicago spacing conventions.

• The current edition of the Chicago Manual of Style is the reference most Australian trade publishers point to for dash rules specifically, so it's worth keeping a copy on hand if you're working across several manuscripts.

None of these replace a proper read-through. They're there to catch what a tired eye misses on the fifth pass through a chapter, not to make the decision for you. A checker will flag a hyphen where an en dash belongs, but it won't tell you whether a paragraph has three em dashes because the moment genuinely called for it or because the sentence structure got lazy. That judgement call still belongs to you, or to a human editor reading with the whole manuscript in mind.

A self-editing checklist before you submit

Before you send a manuscript off to an editor, a publisher, or a beta reader, run a dedicated pass just for dashes. It takes far less time than fixing the same error two hundred times after someone else flags it.

• Search the document for two consecutive hyphens (--) and replace every instance with a proper em dash.

• Check every number range, page reference and date span for a hyphen that should be an en dash.

• Confirm your em dash spacing is consistent throughout, either always spaced or never spaced, matching whichever style guide you're following.

• Read any paragraph with more than two em dashes back aloud. If you're gasping for air, cut one.

• Check compound adjectives built from a proper noun or an open compound, like "pre-World War II", for a hyphen that should be an en dash instead.

• If accessibility is a priority for the project, read at least a sample chapter through a screen reader before finalising.

None of this takes long once it's a habit, and it's the kind of detail that separates a manuscript that reads as professionally prepared from one that clearly wasn't.

Conclusion 

Bookmark this bit for a fast refresher.

• Hyphen (-): joins words. Shortest mark.

• En dash (–): shows ranges and connects a single word to a multi-word phrase.

• Em dash (—): sets off a phrase, marks an interruption, or adds emphasis. Longest mark.

• Spacing: AP puts spaces around an em dash; Chicago, MLA, and APA don't.

• Typing: Windows 11 uses Win + . ; Mac uses Option + Shift + Hyphen for an em dash and Option + Hyphen for an en dash.

• Golden rule: if you could say "to" or "through", it's an en dash. If you're setting off a dramatic aside, it's an em dash, used sparingly.

Print this section and keep it near your desk. After a week of checking against it, the rules tend to stick without you needing to look them up again.

None of these rules are difficult on their own. What makes dashes tricky is that a keyboard gives you exactly one visible option and expects you to know which of three different marks it's standing in for. Once you've internalised the underlying logic, joining takes a hyphen, spanning takes an en dash, pausing takes an em dash; the specific examples stop mattering as much, because you're applying a principle rather than memorising a list.