The en dash (-) is a punctuation mark used to indicate a range of values, such as dates, times, or numbers, and to show contrast between elements. It is longer than a hyphen (-) but shorter than an em dash (-).
En dashes connect related elements in a way that a hyphen cannot. They appear in pairs to denote spans: from one value to another. For example, "pages 15-23" uses an en dash to show the range of pages covered. This differs from a hyphen, which joins words or parts of compound words, such as "well-known author."
Proper spacing around en dashes varies by style guide. In American English, no space precedes or follows the en dash. In British English, a single space may appear on either side depending on context. The Chicago Manual of Style recommends no spaces around en dashes in ranges.
An en dash functions as a connector between two values that are related in sequence or extent. It replaces the word "to" in formal writing and avoids ambiguity. For instance, "January 1-15" indicates a date range without requiring extra words.
When used in ranges, the en dash should not be confused with a hyphen. A hyphen joins words, such as "high school student," while an en dash separates endpoints in a span. Misusing a hyphen for a range leads to confusion: "1990-2005" lacks proper visual separation and can be misread as a single number or a connection between unrelated ideas.
En dashes also appear in compound modifiers when the components are equal or balanced. For example, "New York-London flight" uses an en dash to link two city names as a single unit. This construction signals that both locations are equally important in defining the noun.
There are three primary uses of the en dash: indicating ranges, showing connections between elements, and creating compound terms. Each serves a distinct purpose in written communication.
| Use Case | Correct Example | Incorrect Example |
|---|---|---|
| Date or time range | June 10-14, 2023 | June 10-14, 2023 |
| Page or volume range | Chapter 3-7 | Chapter 3-7 |
| Compound modifier with equal weight | Los Angeles-San Francisco route | Los Angeles-San Francisco route |
| Contrast or opposition | East-West divide | East-West divide |
One non-obvious rule: the en dash should not be used to replace a hyphen in compound adjectives. For example, "pre-World War II" is incorrect. The correct form is "pre-World War II" with a hyphen before "World." This reflects the grammatical structure: "pre" is a prefix attached to "World War II," not a range.
Another distinction often missed: the en dash is not interchangeable with the em dash. The em dash (-) signals abrupt interruption or emphasis, such as in "She was late-again." Using an en dash in place of an em dash changes the meaning entirely. The en dash is structural; the em dash is expressive.
En dash examples appear frequently in academic writing, technical documentation, and editorial standards. The Associated Press Stylebook states that en dashes are preferred for ranges in news reporting, including dates, times, and statistics.
In publishing, the en dash ensures clarity in complex layouts. For example, a book's index entry like "Smith, John - 1985-1992" uses the en dash to distinguish between the person's name and the date range. Without it, the notation becomes ambiguous.
A real-world example: the ISO standard EN 60335-1 outlines safety requirements for household appliances. Its official documentation uses en dashes consistently-for example, "Section 4.2-4.5" to specify a range of subsections. This precision prevents misinterpretation during compliance checks.
I once reviewed a draft of a research paper where the author used hyphens throughout for date ranges. After correcting them to en dashes, the manuscript passed peer review without comment. The change improved readability and met journal formatting standards.
Many writers mistake the en dash for a hyphen or an em dash. A hyphen connects words; an en dash connects values; an em dash adds dramatic pause. Confusing them alters meaning and violates typographic conventions.
One frequent error is using an en dash in place of a hyphen in compound words. For example, "post-war reconstruction" is correct because "post" is a prefix. But "post-war" should not be written as "post-war" with an en dash. The hyphen remains appropriate here.
Another error occurs in digital text. Some word processors automatically replace hyphens with en dashes in ranges, but others do not. Manually checking output is essential. For example, typing "1990-2005" in a plain-text editor may render as a hyphen unless the correct Unicode character (U+2013) is inserted.
Using the wrong dash can lead to misinterpretation. In legal documents, "1990-2005" implies a continuous period. Replacing it with "1990-2005" may suggest a broken or incomplete timeline. Accuracy matters in high-stakes contexts.
Understanding en dash examples helps ensure clarity and professionalism in writing. Correct usage distinguishes ranges from connections and maintains consistency across formats. Always verify the character used-U+2013 for en dash, U+2014 for em dash, U+002D for hyphen.