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Convert Excel, CSV and JSON
Convert a spreadsheet file between supported formats while preserving its tabular data, then download the generated result.
- 100% local
- Instant
- Free
- No account
- Works offline
- Batch processing
Your files are processed locally in your browser and are never sent to our servers.
Drop your file here
Recommended size: up to 30 MB
Processing…0 %
Result
Why use this tool?
Convert a CSV, Excel or JSON file locally while previewing the data directly in your browser.
Smart processing
Clean, structure, and transform your data with rules tailored to the format being processed.
Supported formats
CSV, XLSX, and other tabular formats depending on each tool’s capabilities.
Save time
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Guide
How to use this tool
- 1
Import the file
Drop a supported format into the input area.
- 2
Review the preview
Check columns and sample rows.
- 3
Choose export format
Download the data as CSV, XLSX or JSON.
Tips and best practices
- Work on a copy when your data is important.
- Review the result before reusing it in another application.
- Processing takes place directly in your browser.
Frequently asked questions
Is Excel formatting preserved?
The tool primarily converts tabular data; complex styles, macros or formulas may not be preserved.
Is my data uploaded?
No. Processing happens locally in your browser.
Can I use this tool for free?
Yes. The tool is free and requires no account.
Was this tool useful?
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