Second to Fortnight Conversion Calculator: Free Online Tool
Convert seconds to fortnights with our free online time converter.
Second to Fortnight Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Second).
- The converted value in Fortnight 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 Second to Fortnight
Converting Second to Fortnight involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Second = 8.2672e-7 fortnightsExample Calculation:
Convert 60 seconds: 60 × 8.2672e-7 = 4.9603e-5 fortnights
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 Second and a Fortnight?
The second is the base unit of time in the International System of Units (SI). It is defined by taking the fixed numerical value of the caesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9,192,631,770 when expressed in the unit Hz, which is equal to s⁻¹.
A fortnight is a unit of time equal to exactly two weeks, which corresponds to 14 days or 336 hours.
Note: The Second is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Fortnight belongs to the imperial/US customary system.
History of the Second and Fortnight
Historically, the second was defined as 1/86,400 of a mean solar day. However, variations in the Earth's rotation led to the need for a more precise, constant definition. The atomic definition based on the caesium-133 atom was adopted in 1967.
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.
Common Uses for seconds and fortnights
Explore the typical applications for both Second (imperial/US) and Fortnight (imperial/US) to understand their common contexts.
Common Uses for seconds
- Base Unit: The fundamental unit for all time measurements in science, engineering, and daily life.
- Timing: Used universally for clocks, watches, timers, and scheduling.
- Physics: Essential in defining derived units like velocity (meters per second), acceleration (meters per second squared), frequency (Hertz, or cycles per second), and force (Newtons).
- Computing: Used as a base for measuring intervals, timeouts, and durations, although often subdivided into milliseconds, microseconds, or nanoseconds for finer measurements.
- Everyday Life: Counting heartbeats, measuring short durations, coordinating activities.
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.
Frequently Asked Questions
Questions About Second (s)
What is the base unit of time in the SI system?
The second (s) is the base unit of time.
Why is the second defined using atoms?
The atomic definition provides a much more stable and precise standard than relying on the Earth's rotation, which fluctuates slightly.
How many seconds are in a minute?
There are 60 seconds in a minute.
How many seconds are in an hour?
There are 3,600 seconds in an hour (60 seconds/minute * 60 minutes/hour).
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.
Conversion Table: Second to Fortnight
| Second (s) | Fortnight (fn) |
|---|---|
| 1 | 0 |
| 5 | 0 |
| 10 | 0 |
| 25 | 0 |
| 50 | 0 |
| 100 | 0 |
| 500 | 0 |
| 1,000 | 0.001 |