Pivot CSV Online

This tool turns a flat CSV into a pivot table. Pick a field for the rows, optionally a second field to spread across the columns, then choose which value to aggregate and how.

It is the fastest way to answer questions like sales per region per product without opening a spreadsheet, and the result is plain CSV you can copy straight out.

The row field lists each distinct value down the left. Add a column field to cross-tabulate: every distinct value becomes its own column. The chosen aggregation fills each cell.

Count tallies matching rows; sum, average, min and max operate on the numeric value field; first keeps the first value it sees. Averages are trimmed so you do not get long floating-point tails.

Every conversion happens locally in your browser, so your data is never uploaded, logged or stored on a server. You can use it on confidential exports without a second thought, and it keeps working offline once the page has loaded.

There is no sign-up, no watermark and no row limit: the only ceiling is your device's memory.