Edit CSV & Excel Online

A powerful, spreadsheet-like editor for your CSV and Excel files. Add or delete rows and columns, rename headers, and modify data directly in your browser without uploading to any server.

1 Load Data

Supports files with multiple worksheets

Select File

Supports CSV, Excel (XLSX/XLS), and ODS

Or Paste CSV/Excel Data

2 Spreadsheet Editor

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Row Count

Column Count

Spreadsheet UI

Edit CSV, Excel, and ODS files directly. Fast, reactive, and intuitive interface.

Dynamic Rows/Cols

Easily add or remove rows and columns. Rename any header on the fly.

Client-Side Only

Your data never leaves your computer. Everything happens securely in your browser.