Spreadsheets and data

Free Spreadsheet Formula Explainer.

Plain-language account of calculation and edge cases.

Understand a formula beside its source table, with intermediate steps you can compare against the cells in your workbook.

Chrome extension + account required.
25 free automation tasks/month across tools. Browser-provider limits apply.

WHAT TO HAVE READY

Formula and column meanings.

YOUR STARTING POINT

A task you can make yours.

Copy it here. Paste it into WebAct when you are ready.

This page prepares your prompt. The task runs in WebAct.

01

Make the task yours.

Review the prompt above. Add your goal and any requirements that matter.

02

Bring it to WebAct.

Open WebAct, paste the task and provide your source material. Start in Chat for a draft or explanation; use Task when you want an approved browser action or file.

03

Check the useful part.

Check formulas, code and calculations against known inputs in the appropriate runtime. Review actions before execution and keep the original data available.

A PRACTICAL GUIDE

How to use the Spreadsheet Formula Explainer.

Explain a formula using the meaning of its cells and ranges. Syntax alone may not reveal whether the calculation fits the business question.

Make the workflow fit your task.

Provide the formula, cell meanings and representative values. Explain each nested operation from the inside out, then connect the final result to the question the sheet is answering. Include what happens for missing or unexpected inputs.

What you provide
Formula and column meanings.
What you get
Plain-language account of calculation and edge cases.

See the input and the result.

Illustrative input and output · a teaching example, not a live WebAct run

Example input

=SUMIF(A2:A10,"Paid",B2:B10)

Completed example

Adds amounts in B2:B10 for rows whose status in A2:A10 is Paid; other rows are excluded.
Download this example

Load this input into the prompt, then copy it to WebAct to try the task. Your result may differ from the illustration.

Decisions and troubleshooting.

Should an explanation include the dollar signs in cell references?

Yes. Explain which row or column stays fixed when the formula is copied, since that can change its meaning elsewhere.

Why does the explanation disagree with the displayed result?

Check calculation settings, hidden precision, text values and the actual referenced cells. The formula alone may not reveal these workbook conditions.

Try it with your own source.

Replace the example with your material in the task prompt. Keep the requirements you need, then copy the task into WebAct.

Customize and copy the task ↑
BEFORE YOU BEGIN

Using WebAct.

The prompt and example are available here. Run your task in the WebAct Chrome extension.

Is this tool free?

You can copy and edit the prompt here for free. To use it with WebAct, install the Chrome extension, create and verify your account, and connect an available browser ChatGPT session. The Free plan includes 25 user-started automation tasks per calendar month, shared across tools. Ordinary browser Chat is separate; provider limits apply.

Learn about shared context in our privacy policy and choosing Chat or Task.

FROM A PROMPT TO YOUR OWN WORK

Bring the task to your page.

Install WebAct, add your source material and make the result yours.

Install WebAct