Month Calculator: Count Months Between Dates

Count the number of full months between two dates. Calculate partial months as fractions and see the total duration in months and days.

Month Calculator

Duration
0 Months
0 Days
Total: 0 days

How we count

We calculate the number of complete calendar months between the dates. Any remaining time is shown as days.

$$ \text{Months} = (Y_2 - Y_1) \times 12 + (M_2 - M_1) - \text{adjustment} $$

"Adjustment" handles cases where the day of the month hasn't been reached yet in the final month.