# How Long Is a Decade And a Century?

**URL:** <https://howtodiscuss.com/t/how-long-is-a-decade-and-a-century/49>\
**Category:** Education\
**Created:** [April 28, 2020, 9:49am UTC](https://howtodiscuss.com/t/how-long-is-a-decade-and-a-century/49 "2020-04-28T09:49:28Z")\
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**Author:** ![zaid07](https://howtodiscuss.com/letter_avatar_proxy/v4/letter/z/85e7bf/32.png) [@zaid07](https://howtodiscuss.com/u/zaid07)\
**Post date:** [February 21, 2021, 7:13am UTC](https://howtodiscuss.com/t/how-long-is-a-decade-and-a-century/49/8 "2021-02-21T07:13:55Z")

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## How long is a Decade and a Century?

Considering a year to be a unit in calculating, one year equals one full rotation around the sun. With a year as one unit, a decade is precisely 10 years, i.e., 10 years equals 1 decade. And a century is similar to 10 decades which in turn is (10\*10) = 100 years.

Consequently, these may be expressed as follows:

| 1 year | 365 days. |
| --- | --- |
| 1 Decade | 10 years. |
| 1 Century | 100 years. |
| Millennium | 1000 years. |

Decade and century come from Latin, where Decuria signifies ten men and Centuria means 100. Saeculum, 100 years, is the origin of Centuria. These words describe a group of people with similar traits across time.

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