Months Between Dates: Complete Months, Days and Decimals
Pick two dates to see how many complete months and extra days lie between them, the same gap as years, months and days, and the decimal number of months.
Estimates only. Check important results before you rely on them.
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From related categoriesHow to use this calculator
- Pick the start date and the end date.
- Read the months and days at the top.
- See the years, months and days breakdown.
- Use the decimal months for rent, loans or subscriptions.
The formula
Worked example
From 14 February 2024 to 2 November 2026 is 32 complete months and 19 days (2 years, 8 months, 19 days). In total that is 992 days, or about 32.59 months.
Understanding your result
Calendar months have different lengths, so decimal months use an average of 30.4375 days. Use complete months for rent and notice periods.
When to use it
- Count months of rent, EMI or a subscription.
- Find the age of a baby in months.
- Measure project or tenure length.
Assumptions and limits
The order of the dates does not matter. For total days see the Days Between Dates Calculator.
Frequently asked questions
How do I calculate months between two dates?
Count full calendar months from the start date, then the days left over.
What are decimal months?
The total days divided by the average month length of 30.4375.
Why do complete and decimal months differ?
Calendar months are not all the same length.
How many months old is a baby?
Enter the date of birth as the start date and today as the end date.
Can I use it for rent?
Yes. Use complete months and days.