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28 units available
6 categories total
To convert centuries to years: multiply by 100. To decades: multiply by 10.
1 century = 100 years = 10 decades = 1,200 months ≈ 36,525 average days.
For example, 1 Century (cen) = 3.153600e+17 Shake (shake).
| Century (cen) | Shake (shake) |
|---|---|
| 0.1 | 3.153600e+16 |
| 0.5 | 1.576800e+17 |
| 1 | 3.153600e+17 |
| 2 | 6.307200e+17 |
| 5 | 1.576800e+18 |
| 10 | 3.153600e+18 |
| 25 | 7.884000e+18 |
| 50 | 1.576800e+19 |
| 100 | 3.153600e+19 |
| 500 | 1.576800e+20 |
| 1000 | 3.153600e+20 |
A century is a unit of time equal to 100 years, or approximately 36,525 days (3,153,600,000 seconds based on 365-day years).
1 century = 100 years = 10 decades = 1,200 months ≈ 36,525 average days.
To convert centuries to years: multiply by 100. To decades: multiply by 10.
Historical periodization, infrastructure planning (century-old bridges), and long-term climate projections.
The Gregorian calendar gained only about 1 day of error per 3,236 years — meaning it stays accurate for centuries without adjustment.
The 21st century began on January 1, 2001 — not 2000. There was no year 0, so the first century was years 1–100.
Century numbering: the 1900s = 20th century. Add 1 to the hundreds: 1800s = 19th century, 2000s = 21st century.
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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