How to Fix #VALUE! Error in Excel FILTER and LET Formulas
Question details
The user needs to resolve a #VALUE! error when using a combination of LET, TOCOL, FILTER, and AVERAGE functions to process and calculate cross-sheet data.

- Product
- Excel
- Device & OS
- not provided
- Scenario
- Filtering production values between two limits using 3D references across multiple worksheets and calculating the average of the related delay values.
- Observed behavior
- The formula returns a #VALUE! error instead of calculating the final average, due to mismatched array dimensions or empty filter results.
Verify that all data ranges referenced in your 3D formulas span the exact same number of rows and columns across all worksheets.
Match Array Dimensions within the LET Function
Ensure that the source array and the condition arrays used in the FILTER function are of identical sizes to prevent the #VALUE! calculation error.
The most common cause of a #VALUE! error in a FILTER function is mismatched array sizes. If your 'Projects' range covers rows 5 through 7, but your 'Production' and 'Delays' ranges only cover rows 5 and 6, Excel cannot evaluate the conditions properly.
Review the variable definitions inside your LET formula. For example, check if Projects uses AB5:AB7 while Production uses AB5:AB6.
Modify the formula to ensure corresponding ranges are used for each field. For example: =LET(Projects, TOCOL(FRONT:END!$AB$7), Production, TOCOL(FRONT:END!$AB$7), Delays, TOCOL(FRONT:END!$AB$7), Filtered1, FILTER(Projects, (Production>D6)*(Production<F6)*(Delays>0)), AVERAGE(Filtered1)).
If no data matches your criteria, FILTER will return an error. Provide a fallback value by adding a third argument to the FILTER function, like FILTER(array, include, "").

Create a Dynamic Helper Table using TOCOL
Bypass complex nested array issues by consolidating your 3D sheet references into a helper table, then performing standard calculations on the spilled arrays.
Use WPS Spreadsheet for Advanced Dynamic Array Formulas
WPS Office Spreadsheet provides comprehensive support for modern dynamic array functions including LET, FILTER, and TOCOL. You can easily analyze cross-sheet data and debug complex formulas with its intuitive interface.
- 1. Open your workbook: Launch WPS Spreadsheet and open the workbook containing your 3D references and cross-sheet data.
- 2. Input the dynamic formula: Select your target cell and enter your LET, TOCOL, and FILTER combination formula.
- 3. Evaluate and debug: Press Enter to execute the formula. If an error occurs, use the 'Evaluate Formula' tool in the Formulas tab to trace the exact step causing the dimension mismatch.

Frequently Asked Questions
Why does the FILTER function return a #VALUE! error?
A #VALUE! error in the FILTER function almost always means that the 'include' array (your criteria) has a different number of rows or columns than the main 'array' you are trying to filter. They must be perfectly aligned.
How do I avoid a #CALC! or #VALUE! error when FILTER finds no matches?
You can avoid this by filling in the optional third argument in the FILTER function, known as '[if_empty]'. For example: =FILTER(A2:A10, B2:B10>100, 0) will output a 0 instead of an error if no values are greater than 100.
Can I use TOCOL to pull data from multiple worksheets at once?
Yes, TOCOL supports 3D references. By writing a formula like =TOCOL(Sheet1:Sheet5!A1:A10), you can stack all the values from the range A1:A10 across those five sheets into a single continuous column.




