Easy way to calculate time difference in Excel using simple logic. A simple formula to calculate difference between two dates & times in Excel.

Learn how to calculate the net present value (NPV) of your investment projects using Excel's XNPV function.

Learn how to approximate the effective convexity of bonds using Microsoft Excel with a modified and simpler version of the standard convexity formula.

Learn how to calculate moving averages in Excel using dynamic arrays. Simplify rolling totals with custom functions for efficient analysis.

Excel offers several easy ways to calculate expiry dates. This post explores different ways to automate expiry date calculations in Excel.