Months to Years Converter

What this converter does

This turns a number of months into years. It is one of the cleanest conversions there is, since a year is exactly 12 months. Enter the months and the years come straight back, with decimals for any leftover months.

How to use it

1. Enter Months. Type the number of months.

Press Calculate and the equivalent in years appears.

How the conversion works

There are 12 months in a year, so to convert months to years you divide by 12. So 12 months is 1 year, 24 months is 2, and 6 months is half a year. The number shrinks because a year is the larger unit, and the relationship is fixed: a year is always 12 months, no more and no less.

Why this is exact, when other year conversions are not

This is worth pausing on. Turning days into years, or seconds into years, has to use an average year of 365.25 days, because a year is not a whole number of days and its exact length wobbles with leap years. But going from months to years sidesteps all of that. You are staying in whole calendar units, and a year is defined as exactly 12 months regardless of how many days those months happen to contain. So there is no average and no estimate here: 18 months is exactly 1.5 years, every time. It is the one route to years that is perfectly clean.

An example

Take 18 months. Divide by 12 and you get exactly 1.5 years. Two years is 24 months, 6 months is half a year, and 30 months is 2.5 years. The leftover months show as the decimal, so 15 months is 1.25 years.

Questions people ask

How many months are in a year?

12. So to convert months to years you divide by 12. Twenty-four months is 2 years.

How many years is 18 months?

1.5 years, exactly, since 18 divided by 12 is one and a half.

Is this exact?

Yes. A year is exactly 12 months by definition, so unlike turning days or seconds into years, there is no average or approximation involved.

How do I go from years back to months?

Multiply the years by 12, or use a years-to-months converter.