Free.ai Sheets: online spreadsheet editor with AI
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How to use Free.ai Sheets
Start or open a file
Type into the grid, paste from Excel or Google Sheets, or open an .xlsx, .xls, .csv or .ods file from your computer.
Ask the assistant
Describe the change in plain words. The assistant writes values, formulas and formatting straight into the sheet, and Undo AI change puts it back.
Save or download
Download as .xlsx or .csv at any time. Sign in to save workbooks to your account and reopen them on any device.
Only need a formula?
The Excel formula generator explains and writes single formulas, and the AI spreadsheet tool drafts whole templates as text. Excel formula generator · AI spreadsheet templates
Frequently Asked Questions
A spreadsheet editor that runs in your browser, with an AI assistant beside the grid. It has formulas, multiple sheets, formatting, frozen rows and copy and paste from Excel or Google Sheets. You can open and download .xlsx and .csv files without installing anything.
Editing, formulas, importing and downloading files are free and do not use tokens. The AI assistant uses tokens from your daily free pool, at the same rate as a short chat message. Saving workbooks to your account needs a free account; paid plans can save more and larger workbooks.
You ask in plain words, for example "add a column with each row total" or "clean up these phone numbers". The assistant replies with structured actions (set values, write a formula, add a sheet, format a range, sort) and the editor applies them to the grid. Every change can be undone with Undo or Ctrl+Z.
Only a bounded slice: the header row, a sample of rows, and the cells you have selected, with a size cap. It never receives the whole file. Your workbook itself stays in your browser unless you save it to your account.
Yes. Open .xlsx, .xls, .csv and .ods files from your computer. Values, formulas and sheet names come across; complex features such as macros, pivot tables and charts are not imported.
Yes. Download as .xlsx to keep every sheet and formula, or as .csv for the active sheet. The file opens in Excel, LibreOffice, Numbers and Google Sheets.
The common Excel functions: SUM, AVERAGE, COUNT, IF, SUMIF, COUNTIF, VLOOKUP, XLOOKUP, INDEX, MATCH, ROUND, TEXT, date functions and many more. Formulas recalculate as you edit, and the assistant can write one for you from a description.
Signed out, your work is kept in this browser only, so clearing site data removes it. Signed in, Save stores the workbook in your Free.ai account so you can reopen it from any device at its own link.
Excel and Google Sheets are more complete for heavy analysis, macros and real-time collaboration. Free.ai Sheets is free, needs no install or Microsoft or Google account, opens their files, and puts an AI assistant directly on the grid that edits cells instead of pasting text.
Yes. Ask in Free.ai chat for a budget, tracker or table and the assistant builds a real .xlsx file, with a link to open it here and a download button.
Yes, the editor and the assistant work in a mobile browser. A larger screen is easier for big sheets.
Workbooks saved to your account are visible only to you. Data sent to the assistant is used to answer your request, under the same privacy terms as Free.ai chat.