Free Excel Formula Debugger
Paste any Excel formula and get a plain-English explanation of every function and argument.
How to use Excel Formula Debugger
Paste any Excel formula and get a plain-English explanation of every function and argument.
Frequently asked questions
Which Excel functions are supported?
Over 80 common functions including VLOOKUP, XLOOKUP, IF, IFS, SUMIF, INDEX/MATCH, FILTER, UNIQUE, SORT, TEXT and all standard math, date, and text functions.
Is the formula sent to a server?
No. Everything runs locally in your browser. Your formula data never leaves your device.
Can it debug nested formulas?
Yes. The debugger parses the formula tree and explains each nested function individually.
What if my formula has an error?
The tool highlights the likely error location and suggests how to fix it.
Does it support array formulas?
Yes. Both legacy array formulas (Ctrl+Shift+Enter) and modern dynamic array functions like FILTER and SEQUENCE are explained.