CSV Spreadsheet Editor

Begin with an empty grid, open existing CSV files, edit seamlessly with formulas, and download your work. All processing happens in your browser for privacy and speed.

Edit Your Data

Click cells to select, double-click to edit. Supports formulas like =A1+B2*C3-D4^2. Use controls to modify the grid or open a file.

New: Supports functions (SUM, AVERAGE, MAX, MIN, IF) and ranges (e.g., =SUM(A1:B10)).

Tips for Best Use

• Single click to select a cell, then type to overwrite.
• Double-click to edit existing content.
• Arrow keys move selection; in edit mode, navigate text.
• Enter formulas starting with '=' for calculations.
• Start editing right away or open a CSV to load data.
• Edits update live; download when ready.
• For large grids, scroll horizontally if needed.