FormulaFixer

Fix, explain, or generate any formula

Paste a formula. No account needed.

Explain
Generate
Fix
BulkPaid

Bulk analysis needs FormulaFixer Pro ($2.99/mo).

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Examples
=SUM(A1:A10)
IF with condition
=SUMPRODUCT((A1:A10=B1)*(C1:C10))
lookup value, return matching row

Explain

Paste a formula, get it in plain English.

Generate

Describe what you want, get the formula.

Fix

Paste a broken formula, get it corrected.

See our formula reference list below ↓

Basics

A quick introduction to how spreadsheets and formulas work.

A spreadsheet is a grid of cells. Columns are labeled with letters (A, B, C...), rows with numbers (1, 2, 3...), so B5 means column B, row 5. A range is a block of cells written as A1:D10. Every formula starts with =, followed by a function name like SUM or IF and its arguments in parentheses. When you copy a formula to another cell, references shift relative to the new position — unless you lock them with dollar signs ($A$1).

Formulas can reference other sheets with Sheet2!A1, nest functions inside each other, and handle everything from simple arithmetic to complex lookups across thousands of rows.

View more on our guide →

Formula Reference

All Excel and Google Sheets functions, paginated. Hover over a short explanation to see full details.

Length ↑

Pricing

Free

$0
  • No signup required
  • Explain, generate, and fix formulas
  • One formula at a time

Prefer to pay once? Lifetime pass on Gumroad

Audit every formula in your workbook — in one pass

Spreadsheets accumulate technical debt. A workbook built three years ago by a colleague who's since left the company, with tabs feeding into tabs and no documentation. Before you trust the numbers, you need to know what every formula actually does.

Bulk mode accepts up to 500 formulas — paste them directly or upload an .xlsx file — and returns a complete audit, processed automatically in batches. Each formula gets a plain-language explanation, structural anomalies are flagged against neighboring cells in the same column, and results can be downloaded as a CSV for documentation or compliance.

Paste up to 500 formulas or upload an entire .xlsx file
Column-level pattern detection catches copy-paste errors
Every formula explained in plain language
Download results as a CSV for your records

FAQ (Frequently Asked Questions)

Does this work for Google Sheets and Excel?

Yes. The formula syntax for both is nearly identical, and results work for either.

Is my data or my formulas stored?

No. Formulas are sent for processing and not saved afterward. We don't store anything.

What happens after the free limit?

You can keep using single-formula requests for free. Bulk review needs the paid plan.

How accurate is it?

It's reliable for standard Excel and Google Sheets syntax. Always check results before using them in critical work.