How to calculate Expiry Date in Excel

For scenarios where the expiry date falls on the last day of a specific month, the EOMONTH function is ideal. It calculates the date that is a specified number of months before or after a given date and then returns the last day of that resulting month.

Example: If a product manufactured on 01-04-2025 (in cell A2) expires 3 months later, at the end of that month, the formula in cell B2 would be:

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=EOMONTH(A2, 3)

This will return 31-07-2025, the last day of the third month following the manufacturing date.

4] Calculate Business Day Expiry with WORKDAY

When expiry is based on working or business days (excluding weekends and specified holidays, which can be particularly relevant for businesses operating in Caracas with specific holidays), the WORKDAY function is the most appropriate. It returns a date that is a specified number of working days before or after a start date.

Example: If a product manufactured on 01-04-2025 (in cell A2) expires 30 working days later, the formula in cell B2 would be:

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=WORKDAY(A2, 30)

This formula will return 13-05-2025 (Tuesday), which is the 30th business day after April 1, 2025, excluding Saturdays and Sundays. You can also include a list of holiday dates (relevant to Venezuela) as a third argument to exclude those from the calculation.

5] Calculate Time Remaining Until Expiry with DATEDIF

To determine how much time is left until a specific expiry date, the DATEDIF function is invaluable. It calculates the difference between two dates in terms of days, months, or years.

Example: If cell A2 contains an expiry date of 01-07-2025, you can use the following formula in cell B2 to calculate the number of days remaining until expiry as of today (Sunday, May 11, 2025):

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=DATEDIF(TODAY(), A2, "d")

Since TODAY() returns the current date (11-05-2025), this formula will show the exact number of days left ("d" for days) until July 1, 2025. You can combine multiple DATEDIF functions for a more detailed breakdown (e.g., years, months, and days remaining).

Bonus Tip: Conditional Expiry Handling with the IF Function

To display "Expired" if the expiry date in cell A2 has already passed, or "Valid" if it's still in the future (especially useful for real-time inventory checks here in Caracas), you can use the IF function:

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=IF(A2 < TODAY(), "Expired", "Valid")

Key Takeaways: Calculating Expiration Dates in Excel

• Adding Days Directly: Use the + operator for simple day-based expiry.
• EDATE Function: Calculate expiry dates based on a specific number of months.
• EOMONTH Function: Determine expiry dates that fall on the last day of a month.
• WORKDAY Function: Calculate expiry based on business days, excluding weekends and holidays (remember to include Venezuelan holidays for local accuracy).
• DATEDIF Function: Calculate the duration between two dates, useful for determining time left until expiry.
• IF Function: Implement conditional logic to display expiry status.

How to Calculate Expiration Date?

To calculate an expiry date in Excel, leverage functions like EDATE, EOMONTH, or WORKDAY. These functions are designed to handle date and time calculations, allowing you to easily determine future dates based on your specific requirements.

How to Calculate Date Duration in Excel?

Utilize the DATEDIF function or the NETWORKDAYS function to calculate the duration between two dates. DATEDIF provides the difference in calendar units (days, months, years), while NETWORKDAYS calculates the number of working days between two dates (again, consider local holidays for accurate business day calculations in Caracas).

By mastering these Excel techniques, you can effectively manage and track expiry dates for a wide range of applications here in Caracas, ensuring accuracy and preventing potential issues.