Convert CSV to JSON instantly.
Open a CSV file, edit or clean the data if needed, then export as a JSON array of objects — all in your browser.
How it works
Three simple steps
Open your CSV file
Drag and drop or browse to load your CSV into the editor.
Edit if needed
Optionally clean, sort, filter, or modify the data before converting.
Export as JSON
Download the result as a JSON array with each row as an object.
Key features
Everything you need
Clean JSON output
Each CSV row becomes a JSON object with column headers as keys.
Two-way conversion
Convert CSV to JSON or JSON back to CSV using the same tool.
Edit before exporting
Fix column names, remove rows, or clean data before creating the JSON file.
Private and instant
No uploads — conversion happens locally in your browser.
Your data stays on your device
SheetTool processes everything locally in your browser. Your files are never uploaded to a server. No account required.
FAQ
Frequently asked questions
How do I convert a CSV file to JSON?
Open your CSV in SheetTool, then click export and select JSON format. Each row becomes a JSON object with column headers as keys.
What does the JSON output look like?
SheetTool exports an array of objects, e.g. [{"name":"Alice","age":"30"},{"name":"Bob","age":"25"}].
Can I edit the CSV before converting to JSON?
Yes. You can edit cells, rename columns, remove rows, and clean the data before exporting.
Is this CSV to JSON tool free?
Yes. SheetTool is completely free with no sign-up required.
Ready to get started?
Open SheetTool and start working with your files right away. No sign-up needed.