Excel Formula Guide
Your complete reference for Excel formulas and functions. Browse by category, learn with examples, and generate custom formulas with AI assistance.
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Popular function guides
Start with the most commonly searched Excel functions, then use the AI formula generator when you need a workbook-specific variant.
XLOOKUP(lookup_value, lookup_array, return_array, [if_not_found], [match_mode], [search_mode])VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])SUMIF(range, criteria, [sum_range])SUMIFS(sum_range, criteria_range1, criteria1, [criteria_range2, criteria2], ...)IF(logical_test, value_if_true, value_if_false)TEXTJOIN(delimiter, ignore_empty, text1, [text2], ...)COUNTIF(range, criteria)INDEX(return_range, MATCH(lookup_value, lookup_range, 0))CONCAT(text1, [text2], ...)ROUND(number, num_digits)IFERROR(value, value_if_error)FILTER(array, include, [if_empty])UNIQUE(array, [by_col], [exactly_once])AVERAGEIF(range, criteria, [average_range])LEFT(text, [num_chars])RIGHT(text, [num_chars])Advanced formula guides
These are useful when your workbook logic becomes more dynamic, text-heavy, or criteria-driven than the basic formula set.
COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2], ...)AVERAGEIFS(average_range, criteria_range1, criteria1, [criteria_range2, criteria2], ...)INDIRECT(ref_text, [a1])OFFSET(reference, rows, cols, [height], [width])MID(text, start_num, num_chars)DATE(year, month, day)Why Learn Excel Formulas?
Excel formulas are the foundation of spreadsheet productivity. Whether you are analyzing data, creating reports, or automating tasks, mastering formulas will save you hours of work.
Save Time
Automate calculations that would take hours to do manually
Reduce Errors
Eliminate manual calculation mistakes with tested formulas
Boost Career
Excel proficiency is one of the most in-demand workplace skills
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