Calculating Sum of Day Differences

There is an Excel file that teaches how to perform the Calculating Sum of Day Differences operation.

Excel Format: Calculating Sum of Day Differences

The sum of day differences between dates is calculated in this file using VBA-supported formulas. Additionally, weekends and holidays can optionally be excluded from the calculation. Thus, reaching the actual total workdays becomes easier. For this reason, it is frequently preferred in project duration and workforce planning calculations. Therefore, accurate and reliable results are obtained in date-based summation operations.

Hope it is useful.