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Converters

CSV to JSON Converter

Transform CSV or TSV into JSON with automatic type detection for numbers and booleans.

Runs entirely in your browser — your data never leaves your device.

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How to use this tool

  1. 1Paste CSV data or upload a .csv file.
  2. 2Configure the delimiter and whether the first row is a header.
  3. 3Copy the resulting JSON array.

Frequently asked questions

Does it detect data types?
Yes. Numbers and booleans can be automatically converted to their JSON types, or you can keep every value as a string.
What delimiters are supported?
Commas, tabs (TSV), semicolons, and pipes, plus quoted fields containing the delimiter.
Is my data uploaded to a server?
No. Every tool on JSONPost runs entirely in your browser using JavaScript. Your JSON never leaves your device, so it is safe to use with private or sensitive data.

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