CSV converter
CSV converts in your browser, so the rows never leave your device. Turn a spreadsheet into clean CSV, or CSV into a workbook or JSON, all client-side and free.
What is CSV?
CSV is the plainest way to store a table: one row per line, fields separated by commas, readable by every spreadsheet and database tool. It carries no formatting, formulas, or multiple sheets, which is exactly why it travels so well between programs. The tradeoff is that anything richer than a flat grid has to be flattened to fit.