Fortnight to Week Conversion Calculator: Free Online Tool
Convert fortnights to weeks with our free online time converter.
Fortnight to Week Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Fortnight).
- The converted value in Week will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Time category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Fortnight to Week
Converting Fortnight to Week involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Fortnight = 2 weeksExample Calculation:
Convert 60 fortnights: 60 × 2 = 120 weeks
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Fortnight and a Week?
A fortnight is a unit of time equal to exactly two weeks, which corresponds to 14 days or 336 hours.
A week is a unit of time equal to seven days. It is not an SI unit but is widely used as a convenient cycle for organizing activities longer than a day but shorter than a month.
Note: The Fortnight is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Week belongs to the imperial/US customary system.
History of the Fortnight and Week
The word "fortnight" originates from the Old English term "fēowertīene niht," meaning "fourteen nights." Counting periods by nights was common among ancient Germanic peoples. The term has been in continuous use in English for centuries and remains relatively common in the United Kingdom, Ireland, Australia, New Zealand, and some other Commonwealth countries, although its usage has declined somewhat in favor of "two weeks," especially in North America.
The seven-day week has origins in ancient Babylonian astronomy, linked to the seven classical celestial bodies visible to the naked eye (Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn). This system was adopted by the Jews and later spread through Christianity and Islam. While other cultures have used different week lengths throughout history, the seven-day week became dominant globally, particularly with the adoption of the Gregorian calendar.
Common Uses for fortnights and weeks
Explore the typical applications for both Fortnight (imperial/US) and Week (imperial/US) to understand their common contexts.
Common Uses for fortnights
- Scheduling: Used in some regions for scheduling events, meetings, or appointments that occur every two weeks.
- Payroll: Some companies, particularly in the UK and Australia, operate on a fortnightly pay cycle (paid every two weeks).
- Publications: Certain magazines or journals might be published fortnightly (bi-weekly).
- General Conversation: Used informally in regions where the term is common to refer to a two-week period (e.g., "I'm going on holiday for a fortnight").
- Literary/Formal Contexts: Sometimes used in literature or more formal writing for stylistic reasons or historical accuracy.
Common Uses for weeks
- Scheduling: Organizing work schedules (work week vs. weekend), school schedules, social events, and appointments.
- Calendars: The fundamental structure block in most modern calendars.
- Planning: Used for short-term planning of tasks, projects, holidays, and recurring events.
- Cycles: Measuring durations like project phases, rental periods, medication schedules, or publication frequencies (weekly magazines).
- Cultural/Religious Observance: Many cultures and religions observe specific days of the week for rest, worship, or specific activities (e.g., Sabbath, Sunday).
Frequently Asked Questions
Questions About Fortnight (fn)
How many days are in a fortnight?
A fortnight consists of exactly 14 days (or 336 hours).
How many weeks make a fortnight?
A fortnight is equal to exactly 2 weeks.
Where does the word "fortnight" come from?
It originates from the Old English phrase "fēowertīene niht," which literally translates to "fourteen nights," reflecting an old practice of counting periods of time by the number of nights.
Is "fortnight" commonly used everywhere?
No, its usage varies significantly by region. It remains relatively common in everyday language in the United Kingdom, Ireland, Australia, New Zealand, and some other Commonwealth countries. However, in North America and many other parts of the world, the term "two weeks" is far more prevalent.
About Week (wk)
How many days are in a week?
There are 7 days in a week.
How many hours are in a week?
There are 168 hours in a week (7 days * 24 hours/day).
Is the week an official SI unit?
No, the week is not part of the International System of Units (SI). The base unit of time is the second.
Where did the seven-day week come from?
It is believed to originate with the ancient Babylonians, who associated the number seven with the seven visible celestial bodies (Sun, Moon, and five planets).
Conversion Table: Fortnight to Week
| Fortnight (fn) | Week (wk) |
|---|---|
| 1 | 2 |
| 5 | 10 |
| 10 | 20 |
| 25 | 50 |
| 50 | 100 |
| 100 | 200 |
| 500 | 1,000 |
| 1,000 | 2,000 |