Shake to Fortnight Conversion Calculator: Free Online Tool

Convert shakes to fortnights with our free online time converter.

From:

Shake

To:

Fortnight

How to Use the Calculator:

Enter the value you want to convert in the 'From' field (Shake).
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 Shake to Fortnight

Converting Shake to Fortnight involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

1 Shake = 8.2672e-15 fortnights

Example Calculation:

Convert 60 shakes: 60 × 8.2672e-15 = 4.9603e-13 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 Shake and a Fortnight?

A Shake is an informal unit of time equal to 10 nanoseconds (10 ns), or 10⁻⁸ seconds. It is primarily used in nuclear physics and astrophysics to measure the timing of events in nuclear reactions and related phenomena.

A fortnight is a unit of time equal to exactly two weeks, which corresponds to 14 days or 336 hours.

Note: The Shake 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 Shake and Fortnight

The term "Shake" originated during the Manhattan Project, the World War II effort to develop the first nuclear weapons. Nuclear chain reactions happen extremely quickly, and physicists needed a convenient, short unit of time to discuss the timing of events within these reactions. Ten nanoseconds was chosen as a practical order of magnitude for many processes involved. The name itself is informal, reputedly derived from the expression "two shakes of a lamb's tail," implying a very short duration.

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 shakes and fortnights

Explore the typical applications for both Shake (imperial/US) and Fortnight (imperial/US) to understand their common contexts.

Common Uses for shakes

The Shake is almost exclusively used in specific technical fields:

Nuclear Physics: Measuring the time intervals between successive neutron generations in a nuclear chain reaction.
Astrophysics: Discussing timescales relevant to certain high-energy astrophysical events.
Particle Physics: Occasionally used in experiments involving very short-lived particles or interactions.
Laser Physics: Sometimes used in contexts involving very short laser pulses.

It is not used for everyday time measurements.

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 Shake (shake)

How long is a Shake in seconds?

One Shake is equal to 10 nanoseconds (10 ns), which is 10⁻⁸ seconds, or 0.00000001 seconds.

Where did the name "Shake" come from?

The name is an informal term coined during the Manhattan Project. It's believed to be a humorous reference to the phrase "in two shakes of a lamb's tail," signifying a very brief period, appropriate for the rapid events in nuclear reactions.

Is the Shake an SI unit?

No, the Shake is not part of the International System of Units (SI). The standard SI unit for time is the second (s). The Shake is a specialized, informal unit used within specific scientific communities for convenience.

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: Shake to Fortnight

Shake (shake)	Fortnight (fn)
1	0
5	0
10	0
25	0
50	0
100	0
500	0
1,000	0

All Time Conversions

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