Convert months to years
Converting months to years is a common time task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 mo equals 0.0833333 yr, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert months to years
To convert months to years, multiply the number of months by 0.0833333. For example, 10 mo × 0.0833333 = 0.833333 yr.
yr = mo × 0.0833333
- Write down the value in months you want to convert.
- Multiply it by 0.0833333 (the exact mo→yr factor).
- The result is your value in years. Check it below with the converter or the table.
Conversion table
Common values of months and their equivalents in years:
| mo | yr |
|---|---|
| 1 | 0.0833333 |
| 2 | 0.166667 |
| 3 | 0.25 |
| 4 | 0.333333 |
| 5 | 0.416667 |
| 10 | 0.833333 |
| 20 | 1.66667 |
| 25 | 2.08333 |
| 50 | 4.16667 |
| 100 | 8.33333 |
| 250 | 20.8333 |
| 500 | 41.6667 |
About these units
Month (mo). A month is the approximate period of the Moon's orbit, but calendar months vary from 28 to 31 days. For conversions this tool uses the Gregorian average of 30.436875 days.
Year (yr). A year is the period of Earth's orbit around the Sun. This tool uses the Gregorian average of 365.2425 days, which matches the calendar over the 400-year leap cycle.
Frequently asked questions
How do I convert months to years?
To convert months to years, multiply the number of months by 0.0833333. For example, 10 mo × 0.0833333 = 0.833333 yr. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many years are in 1 month?
1 mo = 0.0833333 yr. That is the fixed relationship used by this converter and by international standards.
How many months are in 1 year?
1 yr = 12 mo. If you are converting in the opposite direction, use our Year to Month converter for the dedicated table and FAQ.
Is the months to years conversion exact?
Calendar months range from 28 to 31 days, so month–year conversions use fixed averages: 1 month = 30.436875 days and 1 year = 365.2425 days (the Gregorian 400-year mean). The math is exact for those standard averages.
What is month used for?
A month is the approximate period of the Moon's orbit, but calendar months vary from 28 to 31 days. For conversions this tool uses the Gregorian average of 30.436875 days.