Fortnight to Decade Conversion Calculator: Free Online Tool
Convert fortnights to decades with our free online time converter.
Fortnight to Decade Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Fortnight).
- The converted value in Decade 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 Decade
Converting Fortnight to Decade involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Fortnight = 0.00383307 decadesExample Calculation:
Convert 60 fortnights: 60 × 0.00383307 = 0.229984 decades
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 Decade?
A fortnight is a unit of time equal to exactly two weeks, which corresponds to 14 days or 336 hours.
A decade is a unit of time equal to 10 consecutive years. It is commonly used to group years for historical, cultural, or statistical analysis, often referring to periods like the 1980s or 2010s.
Note: The Fortnight is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Decade belongs to the imperial/US customary system.
History of the Fortnight and Decade
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 term "decade" originates from the Ancient Greek word "dekas" (δέκας), meaning a group of ten, which passed into Latin as "decem" and then into English. Its application specifically to a ten-year period became standard alongside the development and use of calendar systems for tracking longer spans of time.
Common Uses for fortnights and decades
Explore the typical applications for both Fortnight (imperial/US) and Decade (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 decades
Decades are frequently used for:
- Historical periods: Referring to specific ten-year periods, typically starting with a year ending in '0' (e.g., the 1990s refers to the years 1990-1999).
- Trend analysis: Discussing cultural, social, economic, or political trends that characterize a ten-year span.
- Anniversaries: Marking significant anniversaries known as decennials (10th anniversaries).
- Data analysis: Grouping data in demographic studies, historical analysis, and long-term planning.
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 Decade (dec)
How many years are in one decade?
A decade is defined as exactly 10 years.
How are decades typically named or referred to?
Decades are commonly referred to by the century and the tens digit of the years they encompass, such as "the 1980s" (1980-1989) or "the 2020s" (2020-2029). The first decade of a century (e.g., 2000-2009) is sometimes called "the noughties" or "the aughts".
Is the decade an SI unit?
No, the decade is not a unit within the International System of Units (SI). The base SI unit for time is the second. While widely used in historical and cultural contexts, scientific measurements typically use seconds, years (often Julian years for consistency), or larger multiples like kiloyears (kyr) or megayears (Myr).
Conversion Table: Fortnight to Decade
| Fortnight (fn) | Decade (dec) |
|---|---|
| 1 | 0.004 |
| 5 | 0.019 |
| 10 | 0.038 |
| 25 | 0.096 |
| 50 | 0.192 |
| 100 | 0.383 |
| 500 | 1.917 |
| 1,000 | 3.833 |