Milliseconds to Years Converter

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

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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

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How to Convert Milliseconds to Years

To convert a measurement in milliseconds to a measurement in years, divide the time by the following conversion ratio: 31,556,952,000 milliseconds/year.

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 time in 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.
years = (50,000,000,000 ms ÷ 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.

What Is a Millisecond?

One millisecond is equal to 1/1,000 of a second or 1,000 microseconds.

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 thousandths, or 10-3. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.

Learn more about milliseconds.

What Is a Year?

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.

We have leap years because the Earth actually takes 365.2425 days to revolve around the sun, but we round to 365 for convenience. However, since we miss a quarter of a day per revolution around the sun, this means that we add an extra day to the year once every 4 years, hence the leap year.

Years can be abbreviated as yr (plural yrs), and are also sometimes abbreviated as y. For example, 1 year can be written as 1 yr or 1 y, and 2 years can be written as 2 yrs.

Learn more about years.

Millisecond to Year Conversion Table

Table showing various 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