=EOMONTH(start_date, months)One free generation or explanation per browser, shared across Excel and Google Sheets. Account usage limits apply afterward.
Need more than a single EOMONTH formula? Try our free AI for Excel — it reads your entire spreadsheet, answers questions in plain English, and builds charts and analysis in the same chat.
start_date:
The date from which you want to calculate the end of the month. This can be a date value, a cell reference containing a date, or a formula that returns a date.
months:
The number of months before or after the start_date for which you want to find the end of the month. This can be a positive or negative integer, where positive values move forward in time and negative values move backward.
The EOMONTH function in Excel is a useful tool that allows you to calculate the last day of a month, a specified number of months before or after a given date. This function is particularly helpful for financial analysis, project planning, and any scenario where you need to determine month-end dates.
In simpler terms, the EOMONTH function helps you find the end date of a month based on a starting date and an offset, making it easier to manage timelines and deadlines.
Imagine you are managing a project timeline, and you have the following data in an Excel spreadsheet:
| Task | Start Date | Duration (Months) |
|---|---|---|
| Task A | 2023-01-15 | 3 |
| Task B | 2023-02-10 | 2 |
| Task C | 2023-03-05 | 4 |
| Task D | 2023-04-20 | 1 |
You want to find the end date for each task based on its start date and duration.
To calculate the end date for Task A, you would use the EOMONTH formula as follows:
=EOMONTH(B2, C2)When you apply the formula for Task A, it calculates the end date as follows:
| Task | End Date |
|---|---|
| Task A | 2023-04-30 |
| Task B | 2023-04-30 |
| Task C | 2023-07-31 |
| Task D | 2023-05-31 |
Here, the end date for Task A is calculated as the last day of the month that is 3 months after January 15, 2023, which is April 30, 2023.
The EOMONTH function is particularly useful when you need to determine month-end dates for budgeting, reporting, or scheduling purposes. It allows you to easily manage timelines without manually calculating the end of each month.
Understanding how to use the EOMONTH function can significantly enhance your date management capabilities in Excel, enabling you to effectively plan and track your projects and financials.
Happy calculating!
You have a project timeline in a table where Column A contains project names and Column B contains the start dates of each project. You can use the EOMONTH function to calculate the end date of each project by adding a specific number of months to the start date. This allows for effective project planning and management, helping to ensure that deadlines are met and resources are allocated efficiently without the need for complex date calculations.
Beyond the EOMONTH function: Better Analyst is a full Excel AI that goes well past individual formulas. Upload any spreadsheet and ask questions in plain English — you'll get formulas, data analysis, and charts back in seconds. It's a free AI Excel assistant that works with any .xlsx, .xls, or .csv file — no plugins, no Microsoft 365 required.
Don't have a spreadsheet yet? Use our free AI spreadsheet generator to turn a text prompt into a downloadable Excel file — a full AI Excel sheet maker that builds headers, columns, and formulas from your description.
Create a free account for formula help, explanations, and spreadsheet analysis. Usage limits depend on your plan.
Browse our complete library of Excel formula guides
Compare your options
Open a neutral research prompt in the AI tool you already use. Compare capabilities, limitations, and fit before you choose.
AI answers can be incomplete. Check source links, current pricing, and product documentation before deciding.