Tooloat

Excel to CSV converter

Convert a workbook to CSV, TSV or JSON with one file per sheet, or turn a CSV into a proper Excel file. Choose the separator, add a byte order mark so Excel opens accents correctly, and keep numbers as numbers. Old XLS and ODS files can be saved as XLSX too.

Tooloat runs in your browser and needs JavaScript. It opens in a moment, and your files are processed on your device.

How it works

  1. Drop your spreadsheets or CSV files.
  2. Choose the direction and output options.
  3. Download the converted files.

Why use it

  • XLSX, XLSM, XLS, XLSB and ODS input.
  • CSV, TSV, JSON or XLSX output.
  • BOM option for Excel friendly UTF-8.
  • Every sheet, or just the first.

Popular ways to use this tool

Questions and answers

How do I convert Excel to CSV?

Drop the workbook, keep CSV selected and download. Each sheet becomes its own file.

Why do accents look wrong in Excel?

Excel needs a byte order mark to read UTF-8. Leave Add a BOM for Excel switched on.

Are formulas kept?

The last calculated values are written. Formulas themselves are not carried into CSV.

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