Web Tools

JSON to CSV Converter

Convert JSON arrays and objects to CSV, TSV, pipe-delimited, or semicolon-delimited format. Supports nested object flattening, configurable delimiters, quote modes, line endings, null value handling, and column selection. Runs entirely in your browser — your data never leaves your machine.

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Published June 1, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Paste a JSON array of objects (or a single object) and the tool converts it to delimited text in real time. Nested objects are optionally flattened using dot-notation keys. Arrays within fields are joined with semicolons.

Features

4 delimiter formats: comma (CSV), tab (TSV), pipe, semicolon
Nested object flattening: user.name from {"user":{"name":"..."}}
Configurable options: header row, quote all fields, line endings (LF/CRLF)
Null value handling: custom placeholder for null/undefined values
Real-time conversion: output updates as you type or change options
Built-in examples: simple array, nested objects, mixed types
Statistics: row count, column count, field names
Copy support: copy CSV output to clipboard
Private: runs entirely in the browser — no data transmitted

Use Cases

Data export: convert API responses to spreadsheet-friendly format
ETL pipelines: transform JSON data for CSV-based import tools
Reporting: prepare JSON datasets for Excel or Google Sheets
Database import: generate CSV files for bulk database imports
Log analysis: convert structured JSON logs to tabular format
Quick inspection: view JSON array data in a tabular layout