CSV to JSON
Convert CSV data into JSON output. Use the first row as headers or generate generic column names.
Quoted fields are supported. When header mode is off, keys are generated as column1, column2, and so on.
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Privacy: conversion runs locally in your browser. No CSV or JSON content is stored or transmitted.
How it works
Paste CSV input, choose the delimiter, and decide whether the first row should be treated as header keys. The tool outputs a JSON array of objects.
Examples
- name,age + data rows → JSON objects with name and age keys
- 1;2;3 with semicolon delimiter → JSON conversion with the chosen delimiter
- Header mode off → automatic keys like column1, column2
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you format and validate JSON data for readability and debugging. It runs entirely in your browser without sending data to a server.
You can use this tool when working with APIs or cleaning up structured data. The results should be interpreted as a properly formatted JSON structure or validation feedback.
FAQ
- What CSV format does this converter accept?
It accepts standard CSV text with configurable delimiters such as comma, semicolon, or tab.
- Can the first row be used as object keys?
Yes. Header mode uses the first row as JSON object property names.
- Does it support quoted CSV values?
Yes. Quoted fields and escaped quotes are supported.
- Is the conversion stored?
No. Conversion runs locally in your browser and is not stored or transmitted.