Transform JSON arrays and nested object lists into clean, formatted CSV or TSV spreadsheets for Microsoft Excel, Google Sheets, and relational database imports.
Import API payloads and database exports straight into spreadsheet software and SQL tables.
Modern web APIs, databases, and microservices almost exclusively exchange data formatted as JSON. However, business analysts, marketing teams, accountants, and database administrators require flat tabular data formatted as CSV to perform audits, build charts, or import records into Excel, Google Sheets, Airtable, and SQL databases.
The Developers Web Tools JSON to CSV Converter dynamically gathers all unique keys across all records in your dataset, safely flattens nested child properties, handles quote and comma escaping under the RFC 4180 standard, and generates spreadsheet-ready tabular files with zero server data exposure.
Understanding nested object flattening, column indexing, and delimiter escaping.
The tool scans all objects in the input array to build a complete superset of column headers, ensuring missing keys in individual records are handled gracefully with empty cells.
Nested structures like {"user": {"address": {"city": "Berlin"}}} are flattened into dot-notated columns such as user.address.city.
Any cell containing commas, quotes, or line breaks is automatically wrapped in double quotes, with internal quotes properly escaped as "".
Fast, private, and flexible converter built for data analysts and developers.
The most common input is a JSON array of objects (e.g. [{"id":1},{"id":2}]). If you provide a single JSON object, the tool automatically treats it as a single row. If you provide a 2D array, it maps rows and columns directly.
The converter scans every record in your input to build a master list of all unique keys. If a key is missing from a specific object, an empty value is assigned to that column for that row.
Under standard RFC 4180 rules, any string containing the selected delimiter, quotation marks, or newline characters is safely enclosed in double quotes.
Yes! You can use the Developers Web Tools CSV to JSON Converter to turn CSV or TSV spreadsheets back into structured JSON arrays.