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Spreadsheet Studio
Build real spreadsheets, with formulas, in your browser.
Multiple sheets, a full formula engine, conditional formatting, charts and named ranges — with Excel (.xlsx) and CSV import and export, no install required.
What you can do with Spreadsheet Studio
- Work across multiple sheets in one workbook, with merged cells and resizable rows/columns
- Use a full formula engine — math, statistics, logical, lookup (VLOOKUP/XLOOKUP/INDEX-MATCH), text and date/time functions
- Format cells with fonts, colors, borders, number formats and conditional formatting (rules, color scales, data bars)
- Freeze rows and columns so headers stay visible while you scroll
- Insert charts — column, bar, line, area, pie, donut or scatter — bound to a data range
- Define named ranges scoped to a sheet or the whole workbook
- Import Excel (.xlsx) or CSV files, or export your workbook back out
Main features
A real formula engine
Spreadsheet Studio has its own formula engine with roughly 80 functions across math, statistics, logical, lookup and text/date categories — including VLOOKUP, XLOOKUP and INDEX/MATCH — with automatic recalculation as you edit.
Conditional formatting and charts
Highlight data with conditional formatting rules, color scales and data bars, and visualize it with column, bar, line, area, pie, donut or scatter charts bound directly to your data.
Excel and CSV, both ways
Import .xlsx workbooks (preserving multiple sheets, formulas, styling, merges and freeze panes where supported) or CSV files, and export back to .xlsx or CSV whenever you need to.
Named ranges
Define named ranges scoped to a single sheet or the whole workbook, so formulas can refer to a range by name instead of a cell reference.
Who it's for
- Budgets, trackers and simple financial models
- Data analysis with formulas and lookup functions
- Reports with charts built directly from your data
- Cleaning up and re-exporting CSV/Excel data
Supported formats
How it works
- 1
Start a blank workbook, or import an .xlsx/CSV file
- 2
Build out sheets with formulas, formatting and charts
- 3
Freeze headers and define named ranges as needed
- 4
Export to .xlsx, CSV, or save as JTProject
Local-first & portable
Spreadsheet Studio runs entirely in your browser — your workbook is calculated and edited client-side. Save it as a portable .jtproject file to keep working on it elsewhere.
Spreadsheet Studio FAQ
Guides for Spreadsheet Studio
How to Edit an Excel Spreadsheet Online
A guide to editing .xlsx and CSV files in a browser — formulas, formatting, charts and multi-sheet workbooks — using JTDesigner Spreadsheet Studio.
Read guideWhat Can You Do With an Online Spreadsheet Editor?
A capability-focused look at what a real browser-based spreadsheet editor supports today — formulas, conditional formatting, charts, named ranges and file compatibility.
Read guideWhat Can You Create With JTDesigner?
A factual overview of everything you can make across JTDesigner's seven browser-based Studios — designs, animations, whiteboards, videos, presentations, spreadsheets and documents.
Read guideRelated Studios
Ready to try Spreadsheet Studio?
Start creating for free — no credit card required.