Function Problems

Calculate Combined Service History Across Multiple Periods in Excel

Nimra Malik Oct 1, 2026 868 views

Question details

Calculate the total combined service duration (tenure) for an employee who has left and subsequently returned to the company across multiple distinct employment periods.

How to Calculate Combined Service History Across Multiple Employment Periods in Excel

Product: Excel
Device & OS: not provided
Scenario: Tracking and combining employee tenure where the employee has multiple periods of service, requiring an exact summation of total days instead of individual duration reports.
Observed behavior: Using separate duration formulas calculates each period individually in years and months but fails to provide a single, combined total duration.

Before you start

Ensure that all your start date and end date cells are formatted as valid Dates in Excel rather than plain text, as text entries will cause calculation errors.

Solution 1Recommended

Calculate Total Combined Days First

The most accurate method is to calculate the total number of days across all service periods and then format them into a readable duration.

By subtracting the start date from the end date for each period, you get the total days. If the departure or final date is blank, you can use the TODAY() function to account for ongoing service.

Set up your date columns

Organize your data with specific columns. For example: C3 for Original Start Date, D3 for Departure Date, E3 for Return Date, and F3 for Final/Current Date.

Input the combined formula

Select the cell where you want the total days to appear and enter the formula: =IF(C3="","",(IF(D3="",TODAY(),D3)-C3)+IF(E3="",0,IF(F3="",TODAY(),F3)-E3))

Execute the formula

Press Enter to display the total combined days of service across both employment periods.

Convert to readable duration

Use mathematical formulas to convert this raw number of days into years, months, and days based on your specific company reporting standards, such as dividing the total by 365.25 for years.

Ongoing Employment Tracking: The TODAY() function automatically updates the service days each time you open the workbook if the employee is currently active.

Solution 2

Calculate Individual Service Periods Using DATEDIF

If you need to view each employment period separately to review historical tenure breakdowns before combining them, use the DATEDIF function.

Work with Excel Formulas in WPS Office

Calculate Employee Service History Easily in WPS Spreadsheet

WPS Spreadsheet fully supports advanced date formulas, including IF, TODAY, and DATEDIF. You can effortlessly manage employee records, sum combined tenures, and format dates with high precision using familiar spreadsheet features.

1. Open WPS Spreadsheet: Launch WPS Office and open your employee records workbook.
2. Apply the tenure formula: Select your target cell and input the combined days formula utilizing the IF and TODAY functions.
3. Calculate results instantly: Press Enter to execute the formula and instantly view the combined service duration for your personnel.

Fully compatible with Microsoft Excel date functions and formatsPre-built templates for HR employee tenure trackingLightweight software with a fast, intuitive interfaceFree alternative to Microsoft Office for daily calculations

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Frequently Asked Questions

Why is my service history formula returning a #VALUE! error?

This typically occurs when one or more of your date cells contain text instead of valid Excel date formats. Select your date cells, right-click, choose 'Format Cells', and ensure they are assigned to the 'Date' category.

How do I convert the total days into a 'Years, Months, Days' format?

Since months have varying lengths, converting exact combined dates can be complex. A common approximation is to divide the total days by 365.25 to find the years, and use the INT and MOD functions to calculate the remaining months and days.

Will the TODAY() function update my data automatically?

Yes, the TODAY() function updates dynamically. It will automatically recalculate to the current date based on your computer's system clock every time you open or refresh the workbook.

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