Excel, CSV & JSON Data Tools

Convert Excel to CSV, JSON or HTML, CSV and JSON to Excel, change CSV delimiters and remove duplicate rows. Your files are processed in your browser.

7 free tools

Convert Excel spreadsheets (XLSX, XLS, ODS) to CSV with a comma, semicolon or tab separator. Pick the sheet, preview and download.

Convert CSV to an Excel XLSX file. The separator is detected automatically, numbers stay numbers and leading zeros are kept.

Convert an Excel sheet to JSON: an array of objects keyed by the header row, or an array of rows. Numbers and dates keep their types.

Convert JSON to Excel or CSV: arrays of objects become rows and columns, nested fields are flattened into dot-named columns.

Convert an Excel sheet into clean HTML table code with a header row, ready to paste into a website, email or CMS.

Change the separator of a CSV file: comma to semicolon, semicolon to comma, or to tab and pipe, with correct quoting.

Keep only the CSV columns you need and remove duplicate and empty rows, with case-insensitive matching.

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