Sheet Tools
Sheet Editor
Full spreadsheet editor with Excel-style toolbar — formatting, formulas, merge, freeze panes and sorting. Open CSV or Excel files, edit, then export to XLSX, CSV or PDF. Everything runs in your browser.
Drop a Spreadsheet Here!
or
CSV, TSV, XLSX, XLS — drop anywhere on the page
- Full spreadsheet editor (Univer)
- Formulas & formatting
- Sorting & filtering
- Cell styling & colors
- 100% free & private
- No uploading — runs in your browser
SPREADSHEET UTILITY
Why Choose UCDreams Sheet Editor?
Edit CSV and Excel spreadsheets with formulas and instant export
Lightning Fast
Powered by modern browser WebAssembly & HTML5. Instant processing with zero queue times.
100% Private & Secure
Your files never leave your device. All calculations run locally in your browser memory.
Free & Unlimited
No registration, no daily limits, no hidden fees, and zero forced watermarks on exports.
Works Everywhere
Fully responsive on desktop, laptop, iPhone, Android, and tablets on all modern browsers.
3 EASY STEPS
How to Edit Spreadsheets Online
Select or Drop File
Open your CSV or Excel (.xlsx) file in the spreadsheet editor.
Process Online
Edit data, use formulas, format cells, and build charts.
Download Result
Export your spreadsheet as XLSX, CSV, or PDF.
FAQ