= Write My Formula

Excel formulas not working

Fix Excel formulas that are not working.

Paste the formula that is failing, describe what Excel is showing, and get a safer formula plus checks for calculation mode, text cells, separators, data types, and formula errors.

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Formula request

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Mode
Spreadsheet
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Purpose-built inputs

A focused workflow for everyday spreadsheet work.

Structured formula builder

Task, table context, target range, and function hint keep the request specific.

Write / Explain / Fix modes

Generate a new formula, translate a pasted one, or diagnose common syntax issues.

Excel and Sheets toggle

Compatibility notes call out modern functions and platform-specific behavior.

Formula-bar output

The result is formatted for scanning and placed next to a copy button.

Common formulas

Pick the formula you came for.

Excel formula help

Get help writing, explaining, or fixing one Excel formula with range notes and checks before you paste.

AI Excel formula generator

Generate an Excel formula from plain English with range notes, an explanation, and checks before you paste.

Formula Bot alternative

Use a focused formula workbench when you need a formula, explanation, or fix instead of a full spreadsheet-analysis suite.

SheetSolver AI alternative

Compare a narrow formula helper for writing, explaining, and fixing formulas against broader spreadsheet AI suites.

Percentage formulas

Build percent of total, percent change, discount, markup, tax, tip, and completion-rate formulas.

Fix my Excel formula

Paste a broken formula and get a corrected version with checks for errors, text cells, ranges, and fallbacks.

Excel formulas not working

Fix formulas that stop calculating after imports, copied ranges, locale settings, or text-number mismatches.

Excel #VALUE! error

Repair formulas blocked by text values, hidden spaces, wrong argument types, dates, or subtraction syntax.

Excel #NAME? error

Fix formulas with misspelled functions, undefined names, missing quotes, or unsupported functions.

Excel #DIV/0! error

Fix formulas blocked by zero or blank denominators, ratio logic, averages, and IFERROR tradeoffs.

Excel circular reference

Fix formulas that point back at their own result cell or need deliberate iterative-calculation checks.

Excel #REF! error

Repair formulas broken by deleted rows, moved cells, invalid references, or shifted lookup ranges.

VLOOKUP #N/A error

Fix lookup formulas that return #N/A because of exact-match settings, text-number mismatches, or range setup.

Date formulas

Create due dates, workday counts, month-end dates, date differences, and overdue checks.

FILTER formulas

Return matching rows for status, region, date, text, and threshold conditions.

Text formulas

Split, extract, join, trim, clean, and replace text from messy imported cells.

Data validation formulas

Block bad IDs, duplicate values, missing fields, and invalid entries with custom TRUE/FALSE rules.

XLOOKUP formulas

Return matching values with separate lookup and return ranges.

INDEX MATCH formulas

Build flexible lookup formulas for left lookups, two-way lookups, and older Excel files.

SUMIFS formulas

Total rows that match status, date, category, customer, or region rules.

Use case

Excel formulas not working for spreadsheet work.

Help Excel users diagnose formulas that fail after imports, copied ranges, regional settings, workbook calculation changes, or text-number mismatches.

What this page gives you

  • A focused repair flow for formulas that are not calculating, not updating, or not parsing.
  • Checks for Show Formulas mode, manual calculation, text-formatted cells, separators, data types, and error values.
  • A revised formula path you can test on one known row before changing the rest of the workbook.

When to use it

Use this page when Excel formulas stop working after an import, copy, regional setting change, calculation setting change, or formula edit. It is strongest when you can paste the exact formula and say whether Excel is showing text, a stale value, an error, or a wrong answer.

Do not use it as a full workbook audit or proof that every formula in a file is safe. Start with one failing formula, check the visible symptom, and test the suggested fix on a known row before replacing a report column.

Worked example

A SUMIFS formula can look correct but fail when dates are imported as text or when the workbook uses a different list separator.

=SUMIFS(C2:C500,B2:B500,"Paid",A2:A500,">="&DATE(2026,5,1),A2:A500,"<"&DATE(2026,6,1))

The formula totals paid rows in May 2026 using date boundaries built with DATE. The checks tell you to confirm real date values, matching range sizes, and the separator your Excel locale expects.

Check before you paste

  • Check Show Formulas and workbook calculation mode before rewriting a working formula.
  • Confirm input cells are stored as the type the formula expects: number, date, or text.
  • Use the correct list separator for your Excel locale before changing function logic.
  • Test the fixed formula on one known row before replacing a whole report column.

Upgrade when the work piles up

Keep going when the sheet gets complicated.

Try twice as a guest. Free accounts get 3 runs per week plus a monthly product email. Upgrade when formula work becomes a recurring part of the week.

Founding access

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