Instant · Precise · Universal
28 units available
6 categories total
To convert fortnights to days: multiply by 14. To convert fortnights to weeks: multiply by 2.
1 fortnight = 14 d = 2 wk = 336 h = 1,209,600 s.
For example, 1 Fortnight (fn) = 1.209600e+14 Shake (shake).
| Fortnight (fn) | Shake (shake) |
|---|---|
| 0.1 | 1.209600e+13 |
| 0.5 | 6.048000e+13 |
| 1 | 1.209600e+14 |
| 2 | 2.419200e+14 |
| 5 | 6.048000e+14 |
| 10 | 1.209600e+15 |
| 25 | 3.024000e+15 |
| 50 | 6.048000e+15 |
| 100 | 1.209600e+16 |
| 500 | 6.048000e+16 |
| 1000 | 1.209600e+17 |
A fortnight is a unit of time equal to 14 days, or two weeks (1,209,600 seconds).
1 fortnight = 14 d = 2 wk = 336 h = 1,209,600 s.
To convert fortnights to days: multiply by 14. To convert fortnights to weeks: multiply by 2.
Fortnightly pay cycles (common in Australia and UK), rental payment periods, and magazine publication schedules.
In Australia, being paid 'fortnightly' is the most common pay cycle. The FFF system defines speed in furlongs per fortnight.
Americans may be unfamiliar with the term. In US English, 'two weeks' is the standard equivalent.
Fortnight = fourteen nights. In countries where it's common, it's as natural as saying 'week' — just meaning two of them.
A shake is an informal unit of time equal to 10 nanoseconds (10⁻⁸ seconds), used in nuclear physics.
1 shake = 10 ns = 10⁻⁸ s = 10,000 ps. A nuclear fission event takes about 1 shake.
To convert shakes to seconds: multiply by 10⁻⁸. To nanoseconds: multiply by 10.
Timing nuclear chain reactions, modeling neutron transport in reactors, and nuclear weapon physics calculations.
In a nuclear explosion, the chain reaction is complete in about 50–60 shakes (500–600 ns). The name reflects the era's dark humor.
Not recognizing 'shake' as a real unit. It's informal but precisely defined and still used in nuclear engineering.
A 'shake' = 10 nanoseconds. It was invented at Los Alamos to make nuclear timing calculations easier — humor in extreme circumstances.



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