Milliseconds to Years Conversion

Enter the time in milliseconds below to get the value converted to years.

Results in Years:
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1 ms = 3.1689E-11 yr
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Milliseconds to Years

To convert a millisecond measurement to a year measurement, divide the time by the conversion ratio.

Since one year is equal to 31,556,952,000 milliseconds, you can use this simple formula to convert:

years = milliseconds ÷ 31,556,952,000

The time in years is equal to the milliseconds divided by 31,556,952,000.

For example, here's how to convert 50,000,000,000 milliseconds to years using the formula above.
50,000,000,000 ms = (50,000,000,000 ÷ 31,556,952,000) = 1.584437 yr

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


The millisecond is a multiple of the second, which is the SI base unit for time. In the metric system, "milli" is the prefix for 10-3. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.


One year is the time it takes for the Earth to complete its orbit around the Sun. There are 365 days in a year, with the exception of the leap year when there are 366.

Years can be abbreviated as yr, and are also sometimes abbreviated as y. For example, 1 year can be written as 1 yr or 1 y.

Millisecond to Year Conversion Table

Millisecond measurements converted to years
Milliseconds Years
1 ms 0.000000000031689 yr
2 ms 0.000000000063377 yr
3 ms 0.000000000095066 yr
4 ms 0.00000000012675 yr
5 ms 0.00000000015844 yr
6 ms 0.00000000019013 yr
7 ms 0.00000000022182 yr
8 ms 0.00000000025351 yr
9 ms 0.0000000002852 yr
10 ms 0.00000000031689 yr
100 ms 0.0000000031689 yr
1,000 ms 0.000000031689 yr
10,000 ms 0.00000031689 yr
100,000 ms 0.0000031689 yr
1,000,000 ms 0.000031689 yr
10,000,000 ms 0.000317 yr
100,000,000 ms 0.003169 yr
1,000,000,000 ms 0.031689 yr
10,000,000,000 ms 0.316887 yr
100,000,000,000 ms 3.1689 yr

More Millisecond & Year Conversions