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CSV to JSON

Convert CSV rows into JSON objects without losing leading zeros.

Runs in your browser. Your input is not uploaded or saved.

Result

Add your input, then select Convert to JSON.

How to use it

The first row supplies field names. Open a CSV or paste it, then download the JSON array.

What to keep in mind

Values stay strings. Duplicate or empty column names are rejected instead of silently overwriting data.

Up to 2 MB per input, with smaller limits for complex operations. Clear removes the current input and result.

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