CSV to JSON Converter
Converters
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About This Tool
Free, private, serverless CSV to JSON converter. Parse CSV files with configurable delimiters (comma, tab, semicolon, pipe), quoted field support, and optional header row. Trim whitespace, copy or download JSON output. RFC 4180 compliant parsing. 100% client-side — no data leaves your browser.
How to Use
- Paste or type your CSV data into the input area.
- Select the delimiter (comma, tab, semicolon, or pipe).
- Enable First row is header to use the first row as JSON keys.
- Click Convert to JSON to generate the output.
- Copy or Download the JSON result.
Frequently Asked Questions
What delimiters are supported?
Comma (,), Tab, Semicolon (;), and Pipe (|). Select the appropriate one from the dropdown before converting.
How does it handle quoted fields?
The parser follows RFC 4180 rules: fields enclosed in double quotes can contain the delimiter, newlines, and escaped double quotes (""). This ensures accurate parsing of complex CSV data.
What happens if the first row is not a header?
If you uncheck "First row is header", the output will be an array of arrays instead of an array of objects. Each inner array represents one row of data.
Is there a file size limit?
There is no hard limit since everything runs in your browser. However, very large files (tens of megabytes) may slow down the browser. The tool works best with files up to a few megabytes.
Can I paste data from Excel?
Yes. Copy cells from Excel (which uses tab delimiter by default) and select "Tab" as the delimiter for correct parsing.
Guides & Tutorials
In-depth guides for every tool. Learn how to process your data privately, for free, right in your browser.
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