Why does my formula show an error?

Open the linked error pages (#N/A, #VALUE!, #REF!) from our directory. Most formula posts fail because of data type mismatches, deleted references, or wrong match modes — not because the function name is wrong.

Should I copy formulas down or use a Table?

Copying down is fine for one-off models. Convert the range to an Excel Table when you add rows often — structured references stay readable and break less.

Formulas - 2026-01-21

Why Excel Shows #VALUE! Error (And How to Fix It)

The #VALUE! error means Excel found the wrong data type. Complete guide to causes, fixes, and prevention.

What is the #VALUE! Error?

The #VALUE! error appears when Excel expects one type of data but receives another—like trying to multiply text or add incompatible values. For all Excel errors, see Common Excel Errors Explained.

Common Causes and Solutions

Text in Math Formulas The most common cause. You're trying to do math with text. Problem: \\\ ' Cell A1 contains "Ten" or "N/A" =A1 * 2 → #VALUE! =A1 + B1 → #VALUE! (if either is text) \\\ Solutions: \\\ ' Convert text to number =VALUE(A1) * 2 ' Use IFERROR to handle gracefully =IFERROR(A1 * 2, 0) ' Check if it's a number first =IF(ISNUMBER(A1), A1 * 2, 0) \\\ Hidden Spaces in Cells Cells that look empty or numeric but contain invisible spaces. Problem: \\\ ' A1 appears to be "100" but is actually " 100" or "100 " =A1 + 10 → #VALUE! \\\ Solutions: \\\ ' Remove spaces =TRIM(A1) + 10 ' Convert and clean =VALUE(TRIM(A1)) + 10 \\\ How to detect: \\\ =LEN(A1) ' If this shows more characters than visible, there are hidden spaces =CODE(LEFT(A1,1)) ' Should be 48-57 for digits, 32 = space \\\ Non-Printable Characters Imported data from web, databases, or other systems often contains invisible characters. Problem: \\\ ' Data looks fine but formulas fail =A1 * 1 → #VALUE! \\\ Solutions: \\\ ' Remove non-printable characters =CLEAN(A1) ' Remove spaces AND non-printable =TRIM(CLEAN(A1)) ' Full cleaning for numbers =VALUE(TRIM(CLEAN(A1))) \\\ Text Dates Dates that look like dates but are stored as text. Problem: \\\ ' A1 shows "01/15/2024" but it's text, not a date =A1 + 30 → #VALUE! =MONTH(A1) → #VALUE! \\\ Solutions: \\\ ' Convert text to date =DATEVALUE(A1) ' Then do calculations =DATEVALUE(A1) + 30 ' For date functions =MONTH(DATEVALUE(A1)) \\\ How to detect: Select the cell. If it's a real date, you'll see a number in the formula bar (like 45307). If it's text, you'll see the date string. Incompatible Range Sizes When formulas expect ranges of the same size but get different sizes. Problem: \\\ ' Trying to multiply ranges of different sizes =A1:A10 * B1:B5 → #VALUE! \\\ Solutio...

Quick Diagnostic Steps

Step 1: Check Data Types \\\ =ISNUMBER(A1) ' TRUE if number =ISTEXT(A1) ' TRUE if text =TYPE(A1) ' 1=number, 2=text, 4=logical, 16=error \\\ Step 2: Check for Hidden Characters \\\ =LEN(A1) ' Compare to expected length =CODE(A1) ' See ASCII code of first character \\\ Step 3: Test with Clean Data \\\ =VALUE(TRIM(CLEAN(A1))) \\\

Universal Fixes

Convert Text to Number \\\ =A1 * 1 =A1 + 0 =A1 -- (double negative) =VALUE(A1) =A1 * 1.0 \\\ Clean and Convert \\\ =VALUE(TRIM(CLEAN(A1))) \\\ Handle Errors Gracefully \\\ =IFERROR(YourFormula, 0) =IFERROR(YourFormula, "Check data") \\\

Prevention Tips

Use Data Validation — Restrict cells to numbers only Format before entry — Set column format to Number/Date first Clean imports — Always TRIM/CLEAN imported data Use Paste Special — Paste Values to remove formatting issues Check source data — Verify data types at the source

Common Excel Errors Explained #N/A Error: Causes and Solutions How to Fix #REF! Error Error Reference →

Formula debugging workflow

Step Action 1 Select the cell and read the formula in the formula bar 2 Use Formulas → Evaluate Formula for nested functions 3 Check for text stored as numbers (green triangle) 4 Fix errors using our formula error guide Go deeper: Compare similar functions · Fix common problems

Frequently asked questions

Why does my formula show an error? Open the linked error pages (#N/A, #VALUE!, #REF!) from our directory. Most formula posts fail because of data type mismatches, deleted references, or wrong match modes — not because the function name is wrong.
Should I copy formulas down or use a Table? Copying down is fine for one-off models. Convert the range to an Excel Table when you add rows often — structured references stay readable and break less.