Convert Months to Years

Convert months to years in seconds with this months-to-years calculator. Enter any number of months to get the year value right away, including decimals for more exact results.

Months

Years to Months

How many months in a years?

In 1 months there are 0.082192 years. Meanwhile in 1 years there are 12.166667 months. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Years to Months calculator above to convert any number.

* Values rounded to 6 decimal places for readability

How to convert months to years?

To convert months to years, use the fact that 12 months = 1 year.

Years (decimal form): divide months by 12
- Formula: years = months / 12
- Example: 18 months = 18 / 12 = 1.5 years
Years and months (mixed form): split the total into whole years plus remaining months
- Whole years: months ÷ 12, keep only the whole number
- Remaining months: months mod 12 (the leftover after full years)
- Example: 27 months = 2 years and 3 months
Negative months: keep the sign clear
- Example: -15 months = -1 year and -3 months (signed months)
- Some formats show -15 months = -1 year and 3 months (months shown as a positive remainder)

Frequently asked questions

How many months are in a year?

A standard year has 12 months. This count stays the same in both common years and leap years.

How do you convert months to years?

Divide the number of months by 12.
Example: 18 months ÷ 12 = 1.5 years.

How do you convert years to months?

Multiply the number of years by 12.
Example: 2.5 years × 12 = 30 months.

Is 24 months the same as 2 years?

Yes. 24 months equals 2 years because 24 ÷ 12 = 2.

Is 6 months the same as half a year?

Yes. Half a year is 6 months because 12 months ÷ 2 = 6 months.

How many years is 36 months?

36 months is 3 years.
Math: 36 ÷ 12 = 3.

How many years is 48 months?

48 months is 4 years.
Math: 48 ÷ 12 = 4.

How many years is 60 months?

60 months is 5 years.
Math: 60 ÷ 12 = 5.

How many months is 1.5 years?

1.5 years is 18 months.
Math: 1.5 × 12 = 18.

How many months is 0.75 years?

0.75 years is 9 months.
Math: 0.75 × 12 = 9.

Can months to years conversion change because months have different days?

Not for a basic months-to-years conversion. Months vary from 28 to 31 days, but the month count in a year is always 12. If you need an exact time span in days, use days instead of months.

How do you convert months to years and months (like 29 months)?

Divide by 12 to get years, then use the remainder as months.
Example: 29 months = 2 years and 5 months (since 24 months is 2 years, and 29 − 24 = 5).

How many months are in 10 years?

10 years equals 120 months.
Math: 10 × 12 = 120.

How many months are in 20 years?

20 years equals 240 months.
Math: 20 × 12 = 240.

Is a leap year still 12 months?

Yes. A leap year has 12 months, just like any other year. The difference is one extra day in February.

Why do some people say a year is 365.25 days?

That number is an average that accounts for leap years. It’s useful for long time spans in days, but it doesn’t change the rule that 1 year equals 12 months.

What’s the easiest way to estimate months to years in your head?

Use 12 months = 1 year. For quick estimates, remember common points:

6 months = 0.5 year
18 months = 1.5 years
30 months = 2.5 years
36 months = 3 years

How does this converter work?

The Calculate Box tool to convert months to years uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a months value in the box and have it instantly converted to years.