Month End Date
Find the last day of a month and how many days remain.
About Month End Date
The last day comes from the month's true length, and the difference to the current day is how many remain. Rent, subscriptions and payroll consistently land on month-end, so the exact closing date shapes budget timing.
Formula
Month End Date
Days until end = days in month - current day
- month length
- 28 to 31 days depending on month and leap year
Worked example
With the default values below, Month End Date returns End Day Number of 28. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Year
- 2,025
- Monthaccepts 1–12
- 2
- Current day of monthaccepts 1–31
- 15
Results
- End Day Number
- 28
- End Day Weekday
- Friday
- Days Until Month End
- 13
Step by step
- 1Values used
- 2Month End Date
- 3End Day Number= 28
- 4End Day Weekday= Friday
- 5Days Until Month End= 13
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Month End Date calculated?
Days until end = days in month - current day The last day comes from the month's true length, and the difference to the current day is how many remain.
Why does Month End Date matter?
Rent, subscriptions and payroll consistently land on month-end, so the exact closing date shapes budget timing.
What values do I need to enter?
This calculator takes 3 inputs: Year, Month, Current day of month. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.