Months Between Dates Calculator
Count the exact number of calendar months between two dates, plus a decimal equivalent and total days.
Pick two dates
Enter a start date and an end date to see the months between.
Frequently asked questions
What counts as a full month?
We use calendar months. Going from Jan 15 to Feb 15 is 1 full month. From Jan 15 to Feb 14 is 0 full months and 30 days.
What is decimal months?
Decimal months convert the total days into a single number using an average month length of 30.44 days.
How is this different from Date Difference?
Date Difference shows days, weeks, months, and years at once. This calculator focuses on months and gives a precise calendar count plus a decimal value.
Does this account for leap years?
Yes. Real calendar arithmetic is used, so February's length is handled automatically.