Begin with an empty sheet, open/save CSV files, and edit seamlessly with formulas. First row is frozen in place for column labels.
All processing happens in your browser for privacy and speed.
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.
Supports simple functions (SUM, AVERAGE, MAX, MIN, IF, CONCATENATE) and ranges (e.g., =SUM(A1:B10)).