JSON to CSV Converter
Convert JSON data into CSV format quickly using this simple, browser-based converter. Ideal for developers, analysts, and spreadsheet tasks that require structured tabular data.
JSON to CSV Converter
How to Convert JSON to CSV
- 1Paste your JSON into the input box. The input must be an array of objects — each object becomes a CSV row and its keys become column headers.
- 2Click Convert to CSV. The CSV output appears below. If there is a syntax error in your JSON, a descriptive error message is shown instead.
- 3Click Copy to copy the CSV to your clipboard, then paste into Excel, Google Sheets, or your database import tool.
- 4Values containing commas, quotes, or newlines are automatically escaped per RFC 4180, so the output is always valid CSV.
When to Use Each Format
JSON, CSV, and XML each have strengths. Choosing the right format for the task avoids unnecessary conversion and keeps data integrity intact.
Format Comparison & Use Cases
JSON for APIs
JSON is the default format for REST and GraphQL APIs. Use it for data that has nested structures — user objects with address sub-objects, product lists with variants. Convert to CSV only when you need to open data in a spreadsheet.
CSV for Spreadsheets
CSV is the universal import/export format for Excel, Google Sheets, and database import tools. Convert API JSON responses to CSV when you need to share data with non-technical stakeholders or bulk-import into a database.
XML for Legacy Systems
Many enterprise systems (SOAP APIs, EDI, older CMS platforms) still use XML. Convert JSON to XML when integrating with these systems, or XML to JSON when you want to process the data in modern JavaScript/Python code.
Config File Migration
Some tools store configuration in XML (Maven pom.xml, Spring, Android resources) while others use JSON (package.json, tsconfig). Use the converter when migrating settings between tools or generating config from a structured data source.
Data Pipeline Debugging
Paste the raw output of an API response or database export to quickly see it in a more readable format. JSON-to-CSV is especially useful for visualising flat API responses in a tabular view before loading into a database.
Importing into Databases
Most databases accept CSV imports natively. Convert your JSON API data to CSV, then import directly into PostgreSQL (COPY command), MySQL (LOAD DATA), or MongoDB (mongoimport with --type csv).
Frequently Asked Questions
Why does JSON to CSV require an array of objects?
CSV is a flat, tabular format — rows and columns. A JSON array of objects maps naturally to this structure: each object is a row, and the object keys become column headers. Deeply nested JSON (objects within objects, or mixed arrays) cannot be flattened into a CSV without ambiguity. If your JSON is nested, flatten it first before converting.
How are commas and quotes in CSV values handled?
The converter follows RFC 4180 CSV conventions. If a value contains a comma, double quote, or newline, the entire value is wrapped in double quotes. Any double quotes inside the value are escaped by doubling them (""). For example, the value She said "hello" becomes "She said ""hello""" in the CSV output.
Can I convert CSV files with special characters or international text?
Yes. The converter processes text as JavaScript strings (UTF-16 internally), which supports all Unicode characters. Accented characters, CJK characters, Arabic, and emoji are all handled correctly. The output is also Unicode text that you can save as a UTF-8 encoded file.
Is there a size limit for the data I can convert?
There is no enforced limit — conversion runs in your browser using JavaScript. Practical limits depend on your browser and device memory. Files up to a few megabytes convert quickly; very large datasets (tens of thousands of rows) may take a second or two. For files larger than ~10 MB, a command-line tool like jq (for JSON) or csvkit will be faster.
Is my data sent to a server?
No. All conversion logic runs entirely in your browser. Your data is never uploaded to any server, never logged, and never stored. This makes the tool safe for sensitive business data, internal APIs, and personal datasets.