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About this tool
Build Google Sheets AI prompts with correctly quoted A1 ranges, a real column map and the 10 million cell budget checked for you.
Google Sheets AI Prompt Builder writes a spreadsheet-assistant prompt that names the tab, the A1 range, the header row and every column — quoting the tab name the way A1 notation requires and mapping each header to both its column letter and its QUERY Col index. The range is measured against the real Google Sheets limits: 10,000,000 cells per spreadsheet, 18,278 columns per sheet ending at ZZZ, and 50,000 characters per cell. It suits anyone whose AI answers reference columns that do not exist or break the moment a tab name contains a space.
Open Google Sheets AI Prompt Builder on AltFTool — it loads instantly in your browser.
Provide your input — an image, text, or data.
Let the tool analyze or generate the result.
Review, refine, and reuse the output wherever you need it.
Applies the real rule — quote the tab name unless it is letters, digits and underscores and starts with a letter.
Each header is listed with its column letter and its Col index, which is where most QUERY formulas go wrong.
Flags a range past the 10,000,000-cell spreadsheet limit instead of letting the assistant invent an answer.
Wrap the tab name in single quotes: 'Q1 Sales'!A1:E500. Quotes are needed whenever the name is anything other than letters, digits and underscores starting with a letter, and a single quote inside the name is escaped by doubling it, as in 'Bob''s Data'.
A Google Sheets spreadsheet holds up to 10,000,000 cells in total across all its tabs, a single sheet holds at most 18,278 columns with ZZZ as the last one, and one cell holds up to 50,000 characters. There is no fixed row limit — rows are constrained by the cell budget and how wide the sheet is.
The two most common causes are referring to columns in the wrong style and comparing dates as plain strings. Use A, B, C when the first argument is a plain range and Col1, Col2, Col3 when it is a virtual array from a function, and write date comparisons as date 'yyyy-mm-dd' rather than a bare text value.
No. You type a tab name, a range and your header names — never the cell values — and the prompt is assembled in your browser. Nothing is uploaded, and you paste the finished prompt into your assistant yourself.