Years (average) to Months (average) converter

To convert years (average) to months (average), enter the value in the first field. The result in months (average) is calculated automatically using the exact conversion factor.

1 yr = 12 mo
1 mo ≈ 0.0833333333333 yr

Formula: mo = yr × 12
yr = mo × 1/12

Definitions: 1 yr = 365.2425 d; 1 mo = 1/12 yr

The year here is the average Gregorian calendar year of 365.2425 days, or 31,556,952 seconds. Actual calendar years have 365 or 366 days, so the result for a specific year can differ by up to a day.

The month here is the average Gregorian calendar month, one twelfth of a year, about 30.44 days or 2,629,746 seconds. Real months last 28 to 31 days, so this is an approximation used for long-term estimates.

See the conversion table with commonly used values, handy for quick reference or study.