Spreadsheet tool · runs in your browser
Spreadsheet editor
Open Excel, OpenDocument and CSV files right in your browser: edit cells, add or remove rows and columns, sort, filter and save as .xlsx, .csv or .json.
- No uploads
- Free
- No sign-up
Loading tool…
Good to know
- Type to overwrite a cell, press Enter or double-click to edit it.
- Paste a block of cells straight from Excel or Google Sheets.
- Big files stay fast: only the rows on screen are drawn.
Questions & answers
Can I open .xlsx files without Excel?
Yes. XLSX, XLS, ODS and CSV files open right in your browser; edit them and save as .xlsx, .csv or .json.
How large a file can it handle?
Tens of thousands of rows stay smooth because only the visible rows are drawn.
Is it really free?
Yes. Every Feemag tool is free, with no sign-up, no watermarks added by us and no daily limits.
Are my files uploaded anywhere?
No. Your files are processed by your own browser on your device and never uploaded to a server. That also makes it fast, even on big files.
Does it work on my phone?
Yes: in any modern browser (Chrome, Safari, Edge or Firefox) on iPhone, Android, Mac, Windows and Linux.
More free tools
- Spreadsheet toolSpreadsheet converterConvert between Excel, CSV, JSON, TSV and ODS.
- Spreadsheet toolMerge spreadsheetsCombine CSV and Excel files into one.
- Spreadsheet toolSplit spreadsheetSplit by rows, by column value, or by sheet.
- Spreadsheet toolClean dataRemove duplicates, empty rows and stray spaces.
- Spreadsheet toolSpreadsheet to PDFTurn Excel or CSV into a tidy, printable PDF.
- Image toolImage compressorShrink photos to an exact KB or MB target for forms, portals and email.
- Image toolResize & cropExact pixels, any aspect ratio, with presets.
- Image toolFormat converterJPG, PNG, WebP and HEIC in one click.
- Image toolPassport & ID photoCrop to official photo sizes for applications.
- Image toolPhoto editorAdjust, filter, crop, rotate and caption photos.
- Image toolResize imagesBatch-resize by percentage, width, height or exact size.
- Image toolWatermark imagesAdd a text or logo watermark to many photos.