CSV JSON converter

Convert quoted CSV without losing cells.

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CSV JSON converter processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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CSV with a header row

Direction

Options and local file

CSV separator

Open a text file on this device

Optional settings apply only to this tab.

Your result

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Updated 2026-09-26

CSV JSON converter explained

CSV JSON converter reads a header row and preserves each following cell as text. The result uses an array of objects keyed by those headers; choose the reverse direction to write CSV from JSON objects.

Next: CSV cleaner data profiler

Next: CSV to YAML converter

A worked example

A CSV header name,score followed by Ada,8 becomes an object with name "Ada" and score "8". The score stays text so leading zeros are not lost.

Before you use the result

Quoted fields, embedded newlines and doubled quote characters are supported. Headers must be unique and every row must have the same number of fields. Cell values stay text, including leading zeros. Spreadsheet formulas are not evaluated. JSON numbers use JavaScript precision; quote exact decimal amounts or identifiers before conversion.

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ToolOctopus. “CSV JSON converter.” Updated 2026-09-26. https://tooloctopus.com/csv-json-converter.

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