Online JSON to CSV Converter
Instantly convert your JSON data into CSV format. Paste, upload, and download your CSV file.
Your JSON Data:
CSV Output:
Options
Why Use Our Converter?
Lightning Fast
Client-side processing for instant results. Your data stays private, always.
Secure & Private
All conversions happen in your browser. No data is sent to our servers.
Advanced Options
Customize your CSV output with options for nested objects, arrays, and delimiter choice.
JSON and CSV: Your Questions Answered (FAQ)
About JSON Format
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. It's based on a subset of JavaScript language and is widely used for transmitting data in web applications.
What are JSON arrays and objects?
In JSON, an array is an ordered collection of values, enclosed in square brackets []. An object is an unordered collection of key-value pairs, enclosed in curly braces {}. Both arrays and objects can be nested within each other to represent complex data structures.
What makes JSON so popular for data interchange?
JSON's popularity stems from its simplicity, readability, and native compatibility with JavaScript. It's language-independent, lightweight, and supports complex data structures, making it ideal for APIs and data exchange between applications.
About CSV Format
What is CSV?
CSV (Comma Separated Values) is a simple file format used to store tabular data, such as a spreadsheet or database. Fields are separated by commas, and each line represents a row of data. Its simplicity makes it compatible with most spreadsheet programs and databases.
Why are CSVs widely used despite their simplicity?
CSV files are universal, human-readable, and supported by virtually all data processing tools. They're ideal for exchanging data between different systems, importing into spreadsheets, and bulk data operations when complex data structures aren't needed.
How are special characters handled in CSV?
When a field contains special characters (like commas, quotes, or line breaks), it's enclosed in double quotes. If a double quote appears within the field itself, it's escaped by another double quote. This allows CSV to represent complex text data while maintaining its structure.
Converting JSON to CSV
Why convert JSON to CSV?
Converting JSON to CSV is useful when:
- You need to import data into spreadsheet applications like Excel or Google Sheets
- You're working with data analysis tools that prefer tabular formats
- You need a human-readable format for non-technical users
- You want to simplify complex nested data for easier processing
How does this JSON to CSV converter handle nested objects?
By default, our converter flattens nested objects using dot notation for the keys. For example, a JSON object with {user: {name: "John", age: 30}} would be converted to columns "user.name" and "user.age" in the CSV. This option can be toggled off if needed.
What about arrays in JSON?
Our converter has an option to expand arrays into separate columns. For example, an array field like "tags": ["red", "blue"] can be expanded to "tags_0" and "tags_1" columns, or compressed into a single comma-separated column.
What if my JSON is not an array of objects?
Our converter works best with JSON arrays of objects, which naturally map to rows in a CSV file. For other JSON structures, the converter will attempt to transform the data into a tabular format, but may require manual adjustments for optimal results.
Is my data safe during conversion?
Yes. All conversion processing happens directly in your browser. Your JSON data is never transmitted to our servers, ensuring complete data privacy and security.
Can I choose a different delimiter for my CSV?
Yes, our converter offers multiple delimiter options including comma (,), semicolon (;), tab, and pipe (|). This is useful for data that may contain commas or for compatibility with different systems.
Can I convert CSV back to JSON using this site?
Yes! We also offer a CSV to JSON converter that allows you to convert your CSV data back to JSON format.
Advanced Usage
How can I handle uneven JSON structures?
When converting JSON with varying field structures, our converter automatically creates a CSV with all unique fields as columns. Missing values are left blank, ensuring a complete tabular representation of your data.
Are there any size limitations?
Since processing happens in your browser, the practical limit depends on your device's memory. Most modern browsers can handle JSON files several megabytes in size without issue. For very large files, consider processing in smaller chunks.
How are data types preserved?
CSV is a plain text format that doesn't inherently preserve data types. Our converter maintains the original values as text. When reimporting to spreadsheet software, you may need to manually specify data types for columns containing numbers or dates.