Comparisons Wiki

Fortnightly vs. Biweekly: Difference and Comparison

By Muazma Batool — Updated on September 5, 2023
"Fortnightly" means once every two weeks; "biweekly" can mean either twice a week or once every two weeks, making it potentially ambiguous.
Fortnightly vs. Biweekly

Difference Between Fortnightly and Biweekly

"Fortnightly" is derived from the phrase "fourteen nights." As such, it clearly and exclusively denotes a period of two weeks or an event occurring every two weeks. For instance, a magazine published fortnightly is released every two weeks, or a person paid fortnightly receives their salary every two weeks. This term is more common in British English than in American English.
Muazma Batool
Sep 05, 2023
"Biweekly," on the other hand, is a term rooted in ambiguity. In the strictest sense, "biweekly" should mean twice a week, stemming from the prefix "bi-" meaning two. However, in many contexts, especially in American English, "biweekly" is also understood to mean once every two weeks, making its definition overlap with "fortnightly."
Muazma Batool
Sep 05, 2023
This potential for confusion between the two meanings of "biweekly" necessitates clarification in certain contexts. If precision is paramount, it's advisable to use "fortnightly" or to specify "every two weeks" instead of using "biweekly."
Muazma Batool
Sep 05, 2023
In terms of usage, "fortnightly" is more prevalent in regions such as the UK, Australia, and New Zealand. Meanwhile, "biweekly" sees more widespread use in the United States, where it might be used to describe meetings, payments, or publications that occur every two weeks or twice a week.
Muazma Batool
Sep 05, 2023

Fortnightly vs. Biweekly Comparison Chart

Frequency

Once every two weeks
Twice a week or once every two weeks
Muazma Batool
Sep 05, 2023

Origin

"Fourteen nights"
Prefix "bi-" meaning two
Muazma Batool
Sep 05, 2023

Ambiguity

Clear definition
Potentially ambiguous
Muazma Batool
Sep 05, 2023

Common Usage

More common in UK, Australia
More common in US
William
Sep 05, 2023

Alternative Meaning

None
Both twice a week and every two weeks
Jonathan
Sep 05, 2023

Fortnightly vs. Biweekly Definitions

Fortnightly

Occurring or produced every two weeks.
The magazine has a fortnightly circulation.
Jonathan
Sep 05, 2023

Biweekly

Occurring twice a week.
The club has biweekly meetings.
William
Sep 05, 2023

Fortnightly

A period of fourteen nights and days.
They took a fortnightly trip.
Muazma Batool
Sep 05, 2023

Biweekly

Spanning or lasting two weeks.
The biweekly seminar concluded successfully.
Muazma Batool
Sep 05, 2023

Fortnightly

Repeated after every fourteen days.
Their meetings are fortnightly.
Elijah
Sep 05, 2023

Biweekly

Taking place twice within a seven-day period.
Their biweekly workouts are intense.
Muazma Batool
Sep 05, 2023

Fortnightly

Lasting for a span of two weeks.
His vacation was a fortnightly break.
Muazma Batool
Sep 05, 2023

Biweekly

Happening every two weeks.
Muazma Batool
May 03, 2023

Fortnightly

Equivalent to the length of half a month.
The fortnightly schedule is rigid.
Jonathan
Sep 05, 2023

Biweekly

Happening twice a week; semiweekly.
Muazma Batool
May 03, 2023

Fortnightly

Happening or appearing once in or every two weeks.
Muazma Batool
May 03, 2023

Biweekly

A publication issued every two weeks.
Muazma Batool
May 03, 2023

Fortnightly

Once in a fortnight.
Muazma Batool
May 03, 2023

Biweekly

Every two weeks.
Muazma Batool
May 03, 2023

Fortnightly

A publication issued once every two weeks.
Muazma Batool
May 03, 2023

Biweekly

Twice a week; semiweekly. See Usage Note at bi-1.
Muazma Batool
May 03, 2023

Fortnightly

A publication issued fortnightly (once every two weeks).
Muazma Batool
May 03, 2023

Biweekly

Occurring once every two weeks; fortnightly.
Muazma Batool
May 03, 2023

Fortnightly

occurring once in a fortnight; once every two weeks
Muazma Batool
May 03, 2023

Biweekly

Occurring twice a week (but see the Usage notes).
Muazma Batool
May 03, 2023

Fortnightly

once in a fortnight; once every two weeks
Muazma Batool
May 03, 2023

Biweekly

Every two weeks.
Muazma Batool
May 03, 2023

Fortnightly

Occurring or appearing once in a fortnight; as, a fortnightly meeting of a club; a fortnightly magazine, or other publication.
Muazma Batool
May 03, 2023

Biweekly

Twice a week (but see the Usage notes).
Muazma Batool
May 03, 2023

Fortnightly

occurring every two weeks
Muazma Batool
May 03, 2023

Biweekly

Something that is published or released once every two weeks.
The local paper is a biweekly.
Muazma Batool
May 03, 2023

Fortnightly

every two weeks;
he visited his cousins fortnightly
Muazma Batool
May 03, 2023

Biweekly

Occurring or appearing once every two weeks; fortnightly.
Muazma Batool
May 03, 2023

Biweekly

a periodical that is published biweekly
Muazma Batool
May 03, 2023

Biweekly

occurring twice a week
Muazma Batool
May 03, 2023

Biweekly

occurring every two weeks
Muazma Batool
May 03, 2023

Biweekly

twice a week;
he called home semiweekly
Muazma Batool
May 03, 2023

Biweekly

every two weeks;
he visited his cousins fortnightly
Muazma Batool
May 03, 2023

Fortnightly vs. Biweekly Frequently Asked Questions

Is a biweekly magazine the same as a fortnightly one

It could be if it's published every two weeks.
Kaitlyn
Sep 05, 2023

Can I use fortnightly to avoid confusion

Yes, "fortnightly" is unambiguous and means every two weeks.
Muazma Batool
Sep 05, 2023

Does biweekly always mean twice a week

No, it can also mean once every two weeks.
Muazma Batool
Sep 05, 2023

How can I be sure of what biweekly means

It's best to clarify the context or use an alternative term.
Olivia
Sep 05, 2023

Which term is more precise

"Fortnightly" is more precise as it only means every two weeks.
Muazma Batool
Sep 05, 2023

In which industries might I encounter "biweekly"

You might hear "biweekly" in payroll, publishing, or scheduling contexts.
Muazma Batool
Sep 05, 2023

Is there a monthly equivalent for fortnightly

Yes, the term "monthly" refers to once a month.
Muazma Batool
Sep 05, 2023

Is fortnightly common in American English

No, it's more common in British English.
Muazma Batool
Sep 05, 2023

What's the origin of fortnightly

It comes from the phrase "fourteen nights."
Lucas
Sep 05, 2023

Does biweekly have other equivalents

Yes, it can also mean "semi-weekly" when referring to twice a week.
Muazma Batool
Sep 05, 2023

Content Creators

Written by
Muazma Batool
As a content editor, Muazma Batool is not just a grammar guru but a creative mastermind who breathes life into every word. With an eagle eye for detail and a passion for storytelling, she transforms bland text into engaging content that captivates audiences and drives results.

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