Quickly convert CSV data or files to JSON format
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Your data is processed locally on your device.
First row automatically becomes JSON property keys, creating clean named objects instead of indexed arrays.
Handles commas, semicolons, tabs, pipes, and custom separators for any CSV variant.
All conversion happens locally in your browser - your data never leaves your device.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
Comma (,), semicolon (;), tab (\t), pipe (|), and custom single-character delimiters are all supported.
Special characters are properly escaped in the JSON output. Quotes within values are handled per RFC 4180 CSV specification.
This tool converts CSV to JSON only. For JSON to CSV conversion, look for a dedicated JSON to CSV tool.
Empty cells become null or empty string in JSON depending on your configuration settings.
No server limit - your browser's memory is the only constraint. Most CSVs process instantly regardless of size.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
Built by UtilsGo • Last updated May 2026 • No ads • No tracking