You don't need to learn hundreds of Excel formulas. Master these 10 and you'll handle 80% of all daily spreadsheet work. These are the formulas employers test for, teachers use, and professionals rely on every day.
1. SUM โ Add Numbers
The most fundamental formula. Adds all numbers in a range. Press Alt + = to auto-insert SUM below a column of numbers.
2. AVERAGE โ Calculate Mean
Returns the arithmetic mean. AVERAGE ignores empty cells but counts cells containing zero.
3. IF โ Make Decisions
Tests a condition. Returns first value if true, second if false. Nest multiple IFs for more conditions, or use IFS in newer Excel.
4. VLOOKUP โ Find Values
Searches the first column of a table and returns a value from another column. The most important lookup formula.
5. COUNTIF โ Count Matches
Counts cells meeting a condition. Use COUNTIFS for multiple conditions.
6. SUMIF โ Conditional Sums
Adds values in column C only where column B equals "Sales". Essential for reports and budget tracking.
7. CONCATENATE / & โ Join Text
Combines text from multiple cells. The & operator is shorter than CONCATENATE(). Add separators like ", " between values.
8. LEFT/RIGHT/MID โ Extract Text
9. TODAY โ Current Date
10. IFERROR โ Handle Errors Gracefully
Wraps any formula. If it errors, returns your fallback instead of ugly #N/A or #VALUE! errors.
Learn them in this order: SUM โ AVERAGE โ IF โ COUNTIF โ SUMIF โ VLOOKUP โ CONCATENATE โ LEFT/MID/RIGHT โ TODAY โ IFERROR. Each builds on the previous.