CSV <-> JSON Converter

Developer

Convert CSV to JSON and vice versa. Transform spreadsheet data for APIs and databases.

CSV
JSON

What is This Tool?

A CSV to JSON converter transforms comma-separated values into JSON arrays and objects, and vice versa. Handle complex CSV features like quoted fields, escaped commas, multiline values, and custom delimiters for seamless data format conversion.

CSV and JSON are the two most common data interchange formats. CSV excels at tabular data (spreadsheets, databases) while JSON is the standard for APIs and web applications. Converting between them is a daily task in data engineering, API development, and ETL pipelines.

Common Use Cases

API Data Preparation

Convert CSV exports from spreadsheets into JSON format for importing into REST APIs and NoSQL databases.

Database Import/Export

Transform JSON API responses to CSV for analysis in Excel, Google Sheets, or database bulk import.

ETL Pipelines

Convert data formats between stages in data processing pipelines — CSV from sources, JSON for APIs, CSV for warehouses.

Data Migration

Convert between CSV and JSON during system migrations, CMS transitions, and data platform changes.

Frequently Asked Questions

How are nested JSON objects handled?

Nested objects are flattened using dot notation for CSV output (e.g., address.city becomes a column header). For CSV to JSON, flat columns are kept as simple key-value pairs.

Are custom delimiters supported?

Yes. Besides comma, you can use semicolon, tab, pipe (|), or any custom character as the CSV delimiter.

How are special characters handled?

Fields containing commas, quotes, or newlines are automatically wrapped in double quotes. Embedded quotes are escaped as double-double-quotes ("").