Seconds to Decades Converter

Enter the time in seconds below to get the value converted to decades.


Result in Decades:

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1 s = 3.1689E-9 decades
Hint: use a scientific notation calculator to convert E notation to decimal

Do you want to convert decades to seconds?

How to Convert Seconds to Decades

To convert a measurement in seconds to a measurement in decades, divide the time by the following conversion ratio: 315,569,520 seconds/decade.

Since one decade is equal to 315,569,520 seconds, you can use this simple formula to convert:

decades = seconds ÷ 315,569,520

The time in decades is equal to the time in seconds divided by 315,569,520.

For example, here's how to convert 500,000,000 seconds to decades using the formula above.
decades = (500,000,000 s ÷ 315,569,520) = 1.584437 decades

Seconds and decades are both units used to measure time. Keep reading to learn more about each unit of measure.

What Is a Second?

The second has historically been defined as 1/60 of a minute or 1/86,400 of a day. According to the SI definition, the second is the duration of 9,192,631,770 oscillations of the frequency of light emitted from the atomic transition between the two hyperfine levels of the unperturbed ground state of the caesium 133 atom.[1]

The second is the SI base unit for time in the metric system. Seconds can be abbreviated as s, and are also sometimes abbreviated as sec. For example, 1 second can be written as 1 s or 1 sec.

Learn more about seconds.

What Is a Decade?

The decade is a time period of 10 years.

Learn more about decades.

Second to Decade Conversion Table

Table showing various second measurements converted to decades.
Seconds Decades
1 s 0.0000000031689
2 s 0.0000000063377
3 s 0.0000000095066
4 s 0.000000012675
5 s 0.000000015844
6 s 0.000000019013
7 s 0.000000022182
8 s 0.000000025351
9 s 0.00000002852
10 s 0.000000031689
100 s 0.00000031689
1,000 s 0.0000031689
10,000 s 0.000031689
100,000 s 0.000317
1,000,000 s 0.003169
10,000,000 s 0.031689
100,000,000 s 0.316887
1,000,000,000 s 3.1689


  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019,

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