How to use
- Paste CSV or JSON, or choose a .csv, .json or .xlsx file.
- Choose what to convert it to.
- Check the preview, then copy or download.
Questions
Which separators are supported?
Commas, semicolons, tabs and pipes. The separator is detected for you, or you can pick it.
What happens to nested JSON?
Nested objects become columns with dotted names, such as address.city. Lists are kept as JSON text in one cell.
What does formula protection do?
Spreadsheets run cells starting with =, +, - or @ as formulas, which can be abused in shared files. Protection adds an apostrophe in front, so they open as plain text. Plain numbers are left alone.
Are Excel formulas and formatting kept?
No. Only the values are converted, using each formula’s last saved result. Older .xls files aren’t supported; save them as .xlsx first.