The Editorial Apartment

The hyphen, en dash and em dash: What they are and how to format them

Leave a comment

These similar-looking marks can show up in your marketing copy. If you’re wondering how they’re used and how they’re supposed to be formatted, here’s a brief explanation of the most common uses:*

Hyphen –
This little bit of line is used to join words or words with prefixes/suffixes. There should be no space on either side of it. The rules of hyphenation can be complex and controversial. Editors hyphenate differently from other editors. Style guides differ. Associated Press (AP) style has a more general approach than “The Chicago Manual of Style” (Chicago style). Examples: co-worker, paraben-free, small-business woman, blue-green water, high-quality care, e-commerce

En dash –
An en dash is longer than a hyphen. In Chicago style, it is used for ranges of things such as years, ages, months, numbers, etc. There should be no space on either side of it. In AP style, a hyphen is used in ranges. Examples: 2001–2003, July–December, pages 3–45, Wednesday–Saturday

In running text, it is best to use words instead of an en dash (or hyphen in AP style). For example, from 2001 to 2003. Don’t mix words with the en dash: from 2001–2003.

Em dash —
The em dash is an even longer line. It is used to interrupt a sentence or to emphasize a phrase. There should be no space on either side of it. In AP style, there is no such thing as an em dash. Instead, AP style uses the en dash for this use, and puts one space before and after it. Example: Begin the new year—your best one yet—with positive, fresh energy.

In marketing and advertising, AP style is the preferred style, along with a house style guide that may include a preference for the Chicago style usage of all three marks, -, – and —, instead of just the two in AP style.

This chart gives a quick rundown:
*There are other places where these marks are used (the hyphens in phone numbers, for example) and the marks can be combined. There’s even a 2-em dash and a 3-em dash in Chicago style.

Advertisements

Author: copyeditorgwen

I am a copy editor and my office is my apartment. I copyedit or proofread a wide range of digital and print marketing communications, as well as books and textbooks. Contact me if you need editorial help. My rates are reasonable, my work thorough, my turnaround fast. Visit my WordPress website: copyeditorgwen.com

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s