JSON Toolkit

    CSV to JSON

    Spreadsheet to JSON

    Parse options

    Delimiter, headers, and value handling

    Parse information

    Row and column counts from the last successful parse

    CSV Input
    3 rows

    JSON Output
    Valid

    Valid JSON
    Loading...

    How this tool works

    The parser reads CSV text locally, applies your delimiter/header/trim/type rules, and builds a JavaScript structure (usually an array of objects when headers are enabled). The result is shown as formatted JSON; Parse information reflects the last successful run.

    Tips

    • Use Auto delimiter when separators are ambiguous (tabs vs commas).
    • Quoted fields with embedded newlines need consistent quoting—watch for “row length” mismatch errors.
    • Type coercion options affect numbers and booleans; disable if you need every cell as a string.
    • Very large files may stress the tab—consider trimming columns or splitting upstream.