Tool guide
Convert Excel, CSV and JSON table data
Read worksheets or JSON, preview records and export JSON, CSV or XLSX, focusing on data rather than full office-document layout.
How to use
- Import a file or paste data and choose a worksheet.
- Inspect headers, dates and leading zeros in the preview.
- Choose an export format and open the result to check data.
Example and expected result
JSON input: [{"name":"Niuma","count":"2"}]
CSV rows: name,count
Niuma,2
After reimporting, check whether count is a number or a string.Capabilities and limits
- CSV does not preserve multiple sheets, styles or explicit types.
- Formulas are not guaranteed to recalculate; Excel display values may export as text.
Troubleshooting
Check source character encoding for garbled text. Set explicit formats for leading zeros, long numbers and dates at the source.
Data processing and storage
Tables are read and exported in the browser without automatic content saving. Downloaded files remain on the device.
Read the full data-processing notice