Add / Subtract Months
Calculate Add / Subtract Months instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Add / Subtract Months
Year
Month
+/- months
Resulting month
11
More about: Add / Subtract Months
What it calculates
The “Add / Subtract Months” calculator computes Resulting month from 3 parameters: year, month, +/- months.
A universal calculator for quick computation.
Example calculation
With parameters Year = 2,026, Month = 5, +/- months = 6 the result is 11 (2026-11).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.