Free JSON to CSV tool
JSON TO CSV CONVERTER
A JSON to CSV converter reads structured JSON, builds a header from its keys, flattens nested objects, and writes spreadsheet-ready rows. Use this free JSON to CSV tool for API responses, reports, legacy database migration, audit trail preservation, or data integrity verification.
{"user":{"name":"Ana"},"score":9} Select a stage to see how one record changes.
Convert JSON to CSV Instantly
Select your input by pasting JSON or choosing a local file. Review the complete CSV output, copy the text, or download the file. Your data never leaves the browser.
Tools and resources
What We Do
We provide browser-based data tools and practical technical guidance for developers, analysts, and anyone working with structured information.
Convert data
Turn JSON into spreadsheet-ready CSV, flatten nested object keys, preview rows, and download the result.
Validate and transform
Format, validate, compare, clean, and transform JSON, CSV, XML, YAML, SQL, and encoded data.
Explain workflows
Publish practical guides about data formats, nested structures, conversion choices, and common use cases.
Protect conversion data
Run core conversion locally in the browser so pasted JSON and selected files remain on the user’s device.
Three steps
How to Convert JSON to CSV
Input selected — ready to convert
For repeat workflows
Need to Automate?
Use a script, library, command-line interface, API endpoint, or AI agent to automate data conversion. Python, JavaScript, Node.js, Java, C#, PowerShell, Bash, Ruby, SQL, jq, Papa Parse, csvjson, JSON2CSV, and ConvertJSON can support bulk conversion, batch processing cron, command-line pipe integration, and incremental update sync.
Choose Desktop or command-line software for field mapping, type coercion rules, a null value placeholder, automated backups, or a real-time streaming pipeline. Check each service's Settings, Connect Data Source options, response time, privacy terms, Cloud Free or Cloud PRO plan, and whether you must sign in or upgrade. Data.Page and similar data utilities can provide another workflow when browser-only conversion is not enough.
Best for private, one-time conversions on this device.
What JSON structures are supported?
JSON objects and arrays of JSON objects are supported. A single object becomes one row, while an array creates one row per object. Root-level primitive values are not supported.
How are nested objects handled?
Nested objects are flattened into dot-notation columns. For example, address.city becomes one CSV header, so the parent path stays visible.
What happens if objects have different keys?
Objects with different keys produce a combined header. Every key is included in first-seen order, and missing values become blank cells.
Can I convert large JSON files?
Yes, you can convert large JSON files within the available browser memory. There is no server Data Limit, but this tool does not use large file chunking. Split very large data in memory-constrained environments.
What delimiter should I choose?
Use a comma for standard Comma Separated Values (CSV). This converter creates comma-delimited output for Excel and Google Spreadsheet. A separate transform is needed for tab-separated values (TSV) or custom delimiter injection.
How are special characters handled?
Commas, quotation marks, and line breaks are escaped with standard CSV quoting. Quotes inside a value are doubled, and UTF-8 downloads support multi-byte character handling.
Can I upload a .json file instead of pasting?
Yes, select Upload File to open a local .json file. The browser reads the file into the editor, where you can review the Source before conversion.
Are my data uploaded to a server?
No, your data are not uploaded to a server. The JSON to CSV Converter runs in your browser with client-side JavaScript, so the file stays on your device.
How do arrays within objects get handled?
Arrays within objects stay in one cell and are converted to text. This version does not perform nested array flattening or create extra rows. Reshape complex arrays first when each item needs a row.
Which browsers support this converter?
Current Chrome, Edge, Firefox, and Safari releases support the converter. Standard file, clipboard, and download features provide cross-platform compatibility on Windows, macOS, and Linux.
Tool directory
Explore every data tool
Choose a calculator by intent. Each tool has its own interactive workspace, personalized heading, instructions, and questions.
JSON Conversion Tools
CSV Tools
JSON Utilities
Developer Data Converters
XML & YAML Tools
Data Format Tools
API Developer Tools
Data Cleaning Tools
Popular Developer Utilities
Common questions
FAQs on Json To Csv Converter
What is JSON?
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JavaScript Object Notation (JSON) is a text format for structured data. Web apps and Application Programming Interfaces (APIs) use JSON for objects, arrays, strings, numbers, Boolean values, and null values.
What is CSV?
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Comma Separated Values (CSV) is a plain-text format for tabular data. Each line is a row, and commas separate columns for Excel, Google Spreadsheet, databases, and data tools.
Can nested JSON be converted?
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Yes, nested JSON objects can be converted. The JSON to CSV parser turns nested paths into headers such as customer.address.city.
Does the tool flatten JSON?
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Yes, the tool recursively flattens nested objects. Arrays remain cell values, so nested array flattening needs a separate field mapping template or transformation step.
Can I convert JSON arrays?
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Yes, you can convert a JSON array of objects. Each object becomes a row, and the union of all keys becomes the CSV header.
Can I convert API responses?
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Yes, paste an API response when its root is an object or array of objects. Extract the records array first when the response wraps records in data or results.
How do I handle invalid JSON?
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Correct the syntax named by the error message, then convert again. Check missing quotes, trailing commas, unmatched brackets, and unescaped characters. A validator can help you Validate & Transform malformed input.
Does it preserve column order?
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Yes, the converter preserves the first-seen order of keys. Keys discovered in later objects are appended, which makes header row validation predictable.
Can I export to Excel?
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Yes, download the CSV and open or import it in Microsoft Excel. CSV retains rows and columns but does not store workbook formatting, formulas, or multiple sheets.
Convert JSON data when you need a clean CSV
Paste JSON or upload a file, convert JSON to CSV, review the result, and download Comma Separated Values for Excel. The free JSON to CSV converter runs in your browser and keeps the full conversion on your device.
Convert JSON to CSV