csvjson
CSV to JSON Converter
Convert CSV to JSON instantly. Runs locally — your data is never uploaded.
To convert CSV to JSON, paste your CSV into the editor above and the JSON output appears immediately. Parsing and serialisation happen in your browser, so API payloads, secrets and config files never leave your device.
Runs in your browserAbout converting CSV to JSON
CSV is flat and tabular. Nested objects are flattened into dotted column names when converting from a hierarchical format. JSON is the default interchange format for web APIs. It has no comments and no trailing commas.
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