Dev Tools

Univer Spreadsheet — Online Spreadsheet Editor

Edit spreadsheets in your browser: formulas, cell formatting, conditional formatting, data validation, filters, sorting, and more. Runs entirely in your browser — nothing you enter is ever uploaded.

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About Univer Spreadsheet — Online Spreadsheet Editor

Univer is an open-source (Apache-2.0) office-suite engine, and this is its spreadsheet editor — a browser-based grid with formulas, cell and number formatting, conditional formatting, data validation, filters, sorting, notes, and more. The build here is self-hosted directly from the dream-num/univer project's own source (its `sheets` example) and runs entirely client-side: nothing you enter is ever uploaded to any server by this site.

How to use

  1. Click any cell and start typing to enter text, numbers, dates, or a formula beginning with "=".
  2. Use the toolbar to format cells — fonts, colors, borders, number formats — and to add filters, sorting, data validation, or conditional formatting.
  3. Add or switch worksheets with the tabs along the bottom; everything stays in your browser tab.

Frequently asked questions

Is my data uploaded anywhere?
No. Editing, formula calculation, and formatting all happen entirely in your browser — nothing you enter is sent to a server by this site.
Does the spreadsheet support formulas?
Yes. It includes a formula engine covering the common spreadsheet functions (math, logical, text, lookup, date, and more), computed in your browser.
Is Univer free and open source?
Yes — Univer is open source under the Apache-2.0 license, so it is free to use, study, and modify.