Data Conversion
CSV to YAML
Transform CSV rows into YAML for configuration and data exchange.
Data Conversion
CSV to JSON
Convert CSV table data into JSON arrays and objects.
Tool Panel
Processed locallyAbout CSV to JSON
Parses CSV properly — quoted fields, embedded newlines and escapes — with a header-row toggle and a configurable delimiter.
- 1
Every value stays a string: `1` comes out as `"1"` and `true` as `"true"`. CSV carries no type information, and guessing would turn `010` into `10` and an 18-digit order number into scientific notation.
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The header row names the keys: a column with an empty header falls back to a position name like `col2`, and a short row is padded with empty strings instead of shifting the rest of the row.
- 3
Quoted fields follow the CSV rules (embedded commas, newlines, `""` escaping), the delimiter can be `;` or `|`, and the header can be switched off so the first row is data (keys become `col1…`).
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Paste the CSV
The first row is treated as the header, and its titles become the JSON keys.
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Adjust the options
Point the delimiter at `;` for exports from European Excel, or switch off "first row is a header" for headerless data.
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Copy the JSON
The output is a pretty-printed array of objects, ready to paste into an API call or a program.
On purpose: CSV has no type information, and auto-converting destroys leading zeros (`007` → `7`) and long identifiers (an order number loses precision as a float). Convert downstream — `Number(...)` after `JSON.parse` — instead of guessing here.
For a flat array of objects, yes. Nested objects are not flattened on the way back (see the json-to-csv page), so do not expect CSV → JSON → CSV to preserve nesting.
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