CSV & JSON Table Tools

Convert CSV and JSON tables without uploading them. Quoted commas, escaped quotes and line breaks within quoted fields are supported.

Runs in your browser. No account required. JSON-to-CSV accepts at most 200 columns and 200,000 cells.

Load a UTF-8 text file (optional) Input Load example Operation CSV to JSON records (first row is header) JSON records to CSV Remove identical CSV rows (keep header) CSV delimiter Comma Semicolon Tab Prefix spreadsheet formula-like cells with an apostrophe when exporting CSV

This changes those cell values to reduce formula execution in spreadsheets. CSV-to-JSON preserves values as strings, including leading zeros.

Result