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CSV to XML to JSON Converter

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Convert between CSV, XML, and JSON in any direction on one screen, instead of hopping between separate one-way tools — nested objects flatten to parent.child, arrays to field[0], fully documented.

How it works

  1. Pick the input format and paste or upload your data
  2. Pick the output format
  3. Convert, then copy or download the result

Frequently asked questions

Does it handle nested JSON?

Yes — nested objects flatten to parent.child dot notation and arrays to field[0] style keys when converting to CSV or XML.

Is my data uploaded anywhere?

No — all parsing and conversion happens in your browser. Nothing is sent to a server.

Can I convert XML back to CSV?

Yes — all 6 direction combinations across CSV, XML, and JSON are supported on this one screen.

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From the blog

Why do "CSV to XML/JSON" converters only go one direction?
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Why do "CSV to XML/JSON" converters only go one direction?

Checked directly, a well-known converter site names itself "CSV to XML/JSON" but only starts from CSV — converting JSON back to CSV means finding a different tool. This one handles all six direction combinations on one screen.

2026-09-18

Update history

  • 2026-09-18 Launched: 3-way CSV/XML/JSON converter (any format to any format) with documented nested-data flattening rules.