A real spreadsheet in your browser: cells, live formulas, formatting and multiple sheets. Open an .xlsx or start from a blank sheet, then download your Excel file.
How it works
- Start from a blank sheet or open an .xlsx, .xls, .ods or .csv file.
- Type your data and formulas (=SUM(A1:A10), =IF(…), =VLOOKUP(…)): everything recalculates instantly.
- Format cells (bold, colors, number, date and % formats), add sheets, then download the .xlsx or .csv.
No Excel and no account needed: the spreadsheet runs entirely in your browser. Your data never leaves your computer, and the workbook you are working on is kept locally so you can come back to it later.
Over 300 Excel functions are recognised (SUM, AVERAGE, IF, VLOOKUP, XLOOKUP, COUNTIF, SUMIFS, DATE, TEXT…). The downloaded file holds real formulas that Excel, LibreOffice and Google Sheets recalculate when they open it.
Copy and paste, fill down, insert or delete rows and columns, resize, rename sheets: formula references follow automatically, just like in Excel.
Frequently asked questions
Does the downloaded file open in Excel?
Yes. It is a real .xlsx file with your values, formulas and formatting (bold, colors, number formats). It opens in Excel, LibreOffice, Numbers and Google Sheets.
Can I open an existing Excel file?
Yes: click “Open” and pick an .xlsx, .xlsm, .xls, .ods or .csv file. Formulas, number formats, colors and column widths are kept.
Which formulas are supported?
Most everyday Excel functions: SUM, AVERAGE, MIN, MAX, IF, IFS, COUNTIF, SUMIFS, VLOOKUP, XLOOKUP, INDEX, MATCH, ROUND, TEXT, DATE, TODAY, PMT and many more. References to other sheets work too.
Where is my data stored?
Only in your browser: nothing is sent to a server. The current workbook is saved locally and restored on your next visit on the same device.
Is there a size limit?
The editor stays smooth up to tens of thousands of cells. For very large files, use the site's Excel conversion tools instead.