Find the date a set number of months after a start date.
Adding months lands on the same day-of-month when possible, but clamps to the end of the target month for dates like the 31st. Month-based offsets mirror how subscriptions and billing repeat, so a clamped result is the realistic outcome.
Add Months to Date
New month = month + months; day is clamped to the target month's length
New month = month + months; day is clamped to the target month's length Adding months lands on the same day-of-month when possible, but clamps to the end of the target month for dates like the 31st.
Month-based offsets mirror how subscriptions and billing repeat, so a clamped result is the realistic outcome.
This calculator takes 4 inputs: Year, Month, Day, Months to add. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.