Spreadsheet Studio — Excel & CSV Editor
A full spreadsheet editor in your browser: open and edit CSV, TSV, XLSX, XLS and ODS files, write formulas, format cells, sort and filter, build charts, and export back to Excel, CSV, JSON or PDF.
- Open an existing file by dragging it in, using File > Import, or start fresh on a blank sheet.
- Click any cell to edit — type a value, or start with = to write a formula like =SUM(A1:A10).
- Use the toolbar and menus to format cells, sort and filter data, add charts, and manage multiple sheets.
- Export your work as XLSX, CSV, JSON or PDF from the File menu — everything happens locally, nothing is uploaded.
All processing happens entirely in your browser. Your data never leaves your device.
Key Features
- Open and edit CSV, TSV, XLSX, XLS, and ODS files
- Full formula support — SUM, AVERAGE, IF, VLOOKUP, COUNTIF, and 100+ functions
- Cell formatting — fonts, colors, borders, number formats, alignment
- Sort and filter data across columns
- Multi-sheet workbook support with sheet tabs
- Chart creation — bar, line, pie, and scatter plots
- Export to XLSX, CSV, JSON, or PDF
- 100% local processing — no cloud uploads
About Spreadsheet Studio
Spreadsheets are the backbone of data organization across every industry — from accounting ledgers and project trackers to scientific datasets and inventory management. Traditional spreadsheet software requires installation and often a paid license.
ForgeKit's Spreadsheet Studio brings a full-featured spreadsheet editor to your browser with support for CSV, TSV, XLSX, XLS, and ODS file formats. You can write formulas (SUM, AVERAGE, IF, VLOOKUP, and more), format cells with colors and borders, sort and filter data, create charts, and manage multiple sheets — all without uploading a single byte to the cloud.
Because everything runs client-side, your financial data, employee records, and sensitive business information stays on your device. When you're done, export back to Excel, CSV, JSON, or a print-ready PDF.
Frequently Asked Questions
Yes. Spreadsheet Studio supports XLSX, XLS, CSV, TSV, and ODS file formats. Drop any of these into the editor to start working.
Over 100 standard spreadsheet functions are available including SUM, AVERAGE, IF, VLOOKUP, COUNTIF, CONCATENATE, DATE functions, and more.
There is no hard limit, but very large datasets (50,000+ rows) may be slower because processing happens in your browser. For best performance, work with datasets under 10,000 rows.
Yes. Select your data and use the Chart menu to create bar, line, pie, and scatter charts that can be exported alongside your spreadsheet.
No. All file parsing, editing, and export happens entirely in your browser. Your data never leaves your device.