Month Calculator
Calculate months between dates or add/subtract months from any date. Also known as Monatsrechner.
Result
Date Math for Months
Find the number of months between any two dates — handy for ages, tenures, and loan terms — or add and subtract months from a starting date to land on the right future or past date.
Two tabs keep the modes separate: one for month differences, one for adding or subtracting months. Everything computes instantly in your browser.
Months between two dates
Pick a start and end date and get the full month difference, useful for age, experience, and contract-length math.
Add or subtract months
Enter a date and a month count to jump forward or backward — great for planning deadlines, renewals, and anniversaries.
Free and private
All date math runs locally in your browser — your dates are never uploaded anywhere.
How to use
- Choose the Between Dates or Add/Subtract tab.
- Enter your dates and month count.
- Click Calculate to see the result instantly.
Frequently Asked Questions
How do I count months between two dates?
Use the Between Dates tab: enter the start and end dates and the tool computes the total months between them.
Can I add months to a date?
Yes. Switch to the Add/Subtract tab, enter a starting date and a month count, and get the resulting date.
How does it handle month-end dates?
The calculator follows standard calendar arithmetic, rolling over sensibly when the target month has fewer days.
Is my data uploaded?
No. All calculations happen in your browser — nothing leaves your device.
Is the calculator free?
Yes, free with no signup.
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