= Write My Formula

Excel formula generator

Generate an Excel formula from a plain-English task.

Tell the workbench what the sheet should do, paste headers or sample rows, and get a formula with the checks you need before copying it into Excel.

Request

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.

Percentage formulas

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

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 formula generator for spreadsheet work.

Build a formula for a clear Excel task when the sheet layout is already known.

What this page gives you

  • A draft Excel formula built from your task, table context, and target cell.
  • A plain-English read of what the formula is trying to do.
  • Checks for range references, modern-function support, and fill-down behavior.

When to use it

Use this page when you know the spreadsheet result you want, but not the exact Excel syntax. It works best when you can provide column names, sample rows, and the cell where the formula should start.

Do not treat the output as final until you test it against a few known rows in your workbook. If the workbook uses unusual merged cells, hidden helper columns, or regional separators, check those details before pasting broadly.

Worked example

For a customer table with Plan in column B and Price in column C, a lookup formula can return the matching monthly price for the plan in B2.

=XLOOKUP(B2,$B$2:$B$100,$C$2:$C$100,"Not found")

The formula searches the plan column for the value in B2, returns the matching price, and shows Not found when there is no match.

Check before you paste

  • Confirm the lookup column and return column match your workbook.
  • Use absolute ranges when the formula will be filled down.
  • Check whether your Excel version supports the suggested function.

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

$9

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