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  Mastering Excel: 15 Essential Formulas Microsoft Excel remains one of the most powerful tools for data management, analysis, and reporting. Whether you are a student, professional, or entrepreneur, mastering Excel formulas can save you time and improve your efficiency. In this post, we’ll explore 15 essential Excel formulas that every user should know in 2026. 1. SUM – Add Numbers Easily The SUM formula helps you quickly add up a range of numbers. Example: =SUM(A1:A10) adds all values from A1 to A10. 2. AVERAGE – Find the Mean AVERAGE calculates the mean of a range of numbers. Example: =AVERAGE(B1:B10) gives the average of values in B1 through B10. 3. IF – Conditional Logic IF lets you make decisions based on conditions. Example: =IF(C1>50,"Pass","Fail") returns “Pass” if C1 is greater than 50, otherwise “Fail.” 4. VLOOKUP – Vertical Lookup VLOOKUP searches for a value in a table and returns a corresponding value from another column. Example...