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Punctuation

When to Use a Slash: Backslash (\) vs Forward Slash (/)

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Learning the difference between a backslash (\) and a forward slash (/) can boost your writing skills. This article covers when to use each type, the specific punctuation rules, and provides examples with easy-to-understand images. Your writing will be clearer and more accurate with these tips.

Backslash vs. Forward Slash

When to Use a SlashPin
When to Use a Slash – Created by 7ESL

The symbol (\) is called a backslash, while (/) is called a forward slash, which is also known as a virgule, a stroke or even an oblique dash. Thus there are two types of slashes in the English language: a backslash (\) and a forward slash (/).

The backslash (\) is a typographical mark used merely for computer coding and file names. It is not a form of punctuation mark in English. We often use the backslash to separate computer folder names, especially in Windows systems.

The backslash (\) Examples:

  • C:\Program Files
  • D:\OFFICE\OFFICE 2010

The forward slash (/), often simply referred to as a slash (which is also known as a stroke, a virgule, or even an oblique dash), is a punctuation mark used in English. The slash can be used to separate lines in a song or poem when they are written in a continuous line. This punctuation mark is also used in place of the word or. It can also be used to show two contradictory notions.

When to Use a Slash (/)

1. We use slashes to separate parts of a website address (URL) on the Internet.

Examples:

  • https://7esl.com/
  • https://www.google.com/

2. We use the slash to form abbreviations.

Examples:

  • w/o (without)
  • w/ (with)
  • b/4 (before)
  • b/c (because)
  • j/k (just kidding)
  • s/t (something)
  • n/a (not applicable, not available)

3. We use slashes in dates to separate day, month and year.

Examples:

  • He was born on 26/07/1995. (British English)
  • She arrived in Tokyo on 03/20/2001. (American English)

4. We use slashes to indicate fractions.

Examples:

  • (a half/ one half)
  • ¾ (three quarters)
  • 1½ (one and a half)

5. We use the slash to indicate the word “OR”

Examples:

  • When his/her client comes, call him on this number.
  • The director is allowed to designate his/ her successor.
  • He/ she can help you as an objective legal adviser.

6. We use the slash to express the word “PER”.

Examples:

  • He clocked up 180 km/h on the straight in that car.
  • An average electric bill might go up $4/month.
  • The price of oil had fallen to $18/barrel.

7. We use the slash to separate lines from a poem or song.

Example:

  • Mary had a little lamb/ little lamb, little lamb/ Mary had a little lamb/ whose fleece was white as snow.

8. We use the slash to show contradictory notions.

Example:

  • The optimism/pessimism ideologies are very popular today.
B1 Knowledge Check · 5 questions

Slash Practice Quiz (B1-B2)

1 / 5
Q1

Question 1: What is the slash (/) an example of in the following sentence? 'The teacher asked each student to bring his/her notebook to class.'

Question 1 options
The forward slash (/) is a punctuation mark used in English writing. In this sentence, it replaces the word 'or,' indicating that either option applies.
Q2

Question 2: Which sentence correctly uses a slash to indicate alternatives?

Question 2 options
The forward slash correctly replaces the word 'or' between two alternatives without spaces around it. Writing 'pass/fail' is the standard way to show two alternative outcomes.
Q3

Question 3: In a report, you need to express that electricity costs five cents for each kilowatt-hour. Which is the best way to write this using a slash?

Question 3 options
The forward slash is used to express 'per' in measurements and rates. Writing '$0.05/kWh' is the standard and clearest way to express 'five cents per kilowatt-hour' in formal writing.
Q4

Question 4: You are writing a formal business email and need to state that a meeting room holds fifty people for each session. Which option is most appropriate?

Question 4 options
In formal business writing, using the slash to mean 'per' in measurements and rates is standard and professional. Writing '50 people/session' is clear and concise for this context.
Q5

Question 5: When using a slash to separate lines of poetry in continuous text, you should always include a space before and after the slash.

Question 5 options
This is true. When quoting poetry inline, the convention is to place a space on each side of the slash that replaces a line break. This improves readability and is the standard formatting rule.

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