What are CSV and JSON?

CSV (Comma-Separated Values) is a plain-text table format where each row represents a record and fields are separated by delimiters (usually commas). JSON (JavaScript Object Notation) is a lightweight data interchange format that uses key-value pairs. Both are commonly used for data storage and transmission.

Does this tool support quoted CSV fields?

Yes. The tool fully follows the CSV standard (RFC 4180), supporting double-quoted fields that can contain delimiters and line breaks. Consecutive double quotes ("") are correctly parsed as a single quote character.

How are nested objects handled in JSON to CSV conversion?

Currently, only top-level object keys are converted. If a JSON object contains nested objects or arrays, their values will be converted to their string representation. For deeply nested data, flatten it first before conversion.

Is my data uploaded to any server?

No. All conversion operations are performed locally in your browser. Your data never leaves your device. Feel free to use it with sensitive data.

CSV / JSON Converter

Convert between CSV and JSON formats

Include Header Row Pretty Print

CSV Input

JSON Output

CSV/JSON Converter Guide

Key Features

CSV → JSON — convert CSV table data to JSON array
JSON → CSV — convert JSON array to CSV table
Custom Delimiter — supports comma, semicolon, Tab, pipe
Header Control — choose whether to include header row

Use Cases

Convert CSV data to JSON format for frontend APIs
Export backend API data as CSV spreadsheets
Format conversion for data analysis
Transform Excel exports into program-readable formats

CSV / JSON Converter

CSV/JSON Converter Guide

Key Features

Use Cases

常见问题

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