Aeons to Weeks (Gyr to wk)
1 aeon equals 52,177,500,000 weeks exactly.
How to convert aeons to weeks
To convert aeons to weeks, multiply the number of aeons by 52,177,500,000. This factor is exact. To go the other way, multiply weeks by 1.916534905×10⁻¹¹ (rounded).
weeks = aeons × 52,177,500,000
Example: 10 aeons = 521,775,000,000 weeks.
Months and years are not constant. This site uses the average Gregorian year of 365.2425 days, so one 'year' converts to 365.2425 days, not 365; use 'common year' for exactly 365 days.
About these units
Aeon (Gyr)
One billion years. The Earth is about 4.5 aeons old.
Aeon comes from a Greek word meaning life, vital force, or an age, and its Latin cousin aevum lies behind English words such as eternal and medieval. In ordinary speech it means any very long, indefinite stretch. Philosophical and religious traditions use it differently, with Buddhist and Hindu texts sometimes rendering kalpa as aeon and Gnostic writers using it for divine emanations.
Astronomers fix a definite size, defining an aeon as a billion years. The figure used here is therefore 10 to the power of 9 Gregorian years, about 3.16 times 10 to the power of 16 seconds, which is a convention rather than a measured length. Geologists use the closely related spelling eon for the largest divisions of Earth's history, namely the Hadean, Archean, Proterozoic and Phanerozoic, and these are not billion-year blocks, since the Phanerozoic covers only about 538.8 million years. With Earth about 4.54 billion years old, it is roughly 4.5 aeons old.
1 aeon = 3.1556952×10¹⁶ seconds (exactly).
Sources: Wikipedia: Aeon; Wikipedia: Geologic time scale
Week (wk)
Seven days. The seven-day week comes from the ancient Near East and is nearly universal in the modern calendar.
Nothing in the sky produces a seven-day cycle, which makes the week a human invention with a contested pedigree. Babylonians marked the 7th, 14th, 21st and 28th of the lunar month as special, but that was not a continuous cycle. A continuous seven-day cycle tied to the Sabbath is attested in Judaism by the 6th century BC at the latest, and scholars disagree on whether it was borrowed from Babylon or developed independently. The Romans later used a week named for the Sun, the Moon and the five visible planets, and in AD 321 Emperor Constantine decreed it across the empire.
A week is seven days, or 604,800 seconds, and it divides evenly into neither months nor years, which is why calendars shift against it. The ISO 8601 standard starts each week on Monday and assigns week 1 to the week containing the year's first Thursday, so some years have a week 53. Other societies used different lengths: Rome had an eight-day market cycle, and revolutionary France used a ten-day week from 1793 to 1802. The English word comes from Old English wice, meaning a turn or succession.
1 week = 604,800 seconds (exactly).
Sources: Wikipedia: Week; Wikipedia: ISO week date
Related conversions
- Weeks to aeons (reverse)
- Aeons to seconds
- Aeons to minutes
- Aeons to hours
- Aeons to days
- Aeons to months
- Aeons to years
- Seconds to weeks
- Minutes to weeks
- Hours to weeks
- Days to weeks
- Months to weeks
- Years to weeks
- Milliseconds to weeks
- Microseconds to weeks
- Nanoseconds to weeks
- Decades to weeks
- Centuries to weeks
- Millennia to weeks
See all time units.