JSON to CSV Converter
Convert JSON arrays into CSV format for easy import into Excel or Google Sheets.
Statistics
💡 Quick Tip
JSON arrays convert to CSV with automatic headers. Open the CSV in Excel or Google Sheets for data analysis!
More Developer Utilities
Effortless Data Transformation: The Language of Apps meets The Language of Business
In the digital world, data usually lives in two places: databases (native to JSON) and spreadsheets (native to CSV). Moving between these two worlds is a daily task for developers, analysts, and marketers. Our JSON to CSV Converteris the bridge—a powerful, secure, and instant way to translate your data streams into human-readable tables and vice versa.
Why Convert Between Formats?
For Business & Analysis
Business logic lives in Excel. Converting raw API JSON logs into CSV allows you to:
- ✓ Create Pivot Tables and Charts from app data.
- ✓ Share reports with non-technical stakeholders.
- ✓ bulk-upload product data to e-commerce platforms.
For Development & Integration
Modern Web APIs speak JSON. Converting legacy CSV files allows you to:
- ✓ Seed your MongoDB or SQL database.
- ✓ Create config files or mocking data for frontend tests.
- ✓ Migrate customer lists from old CRMs to new platforms.
Understanding the Formats
| Feature | JSON (JavaScript Object Notation) | CSV (Comma Separated Values) |
|---|---|---|
| Structure | Hierarchical (Trees, Nested Arrays) | Flat (Rows & Columns) |
| Readability | High for machines, moderate for humans | High for spreadsheet software |
| Data Types | String, Number, Boolean, Null, Array, Object | String (mostly), types inferred by reader |
| Standard Use | REST APIs, Config Files, NoSQL | Excel Import/Export, Data Science |
Security Promise: Zero Server Uploads
Unlike many other free tools, we process your data Client-Side. This means the conversion logic runs right here in your browser using JavaScript. Whether you are parsing sensitive customer emails or proprietary financial data,nothing is ever sent to our servers. Your privacy is mathematically guaranteed by the architecture.
Frequently Asked Questions
How do I handle nested JSON objects when converting to CSV?
CSV is a flat format (rows and columns), while JSON is hierarchical (nested objects and arrays). Our tool handles simple array-of-objects structures automatically. For complex nested objects (e.g., address: { city: 'NY', zip: '10001' }), the converter usually flattens them into dot-notation headers (like address.city) or stringifies the nested object into a single cell, depending on the complexity.
Is there a file size limit for conversion?
Since this tool runs entirely in your browser (client-side), the limit depends on your device's memory (RAM). Generally, files up to 10MB-50MB process instantly. Extremely large datasets (hundreds of megabytes) might freeze the browser tab. For massive big data processing, we recommend using server-side tools or command-line utilities like jq.
Can I convert Excel files directly?
Direct .xlsx binary files are not supported. You must first save your Excel file as a CSV (Comma Separated Values) file. In Excel, go to File > Save As and choose 'CSV UTF-8'. Once you have the raw CSV text, paste it here to convert it to JSON.
Does this tool work offline?
Yes! Because it is a Progressive Web App (PWA) component running locally in JavaScript, once the page is loaded, you can disconnect from the internet and continue converting data. No data is ever sent to our servers.
How are null or missing values handled?
When converting JSON to CSV, conversion logic typically leaves the cell empty for null values or missing keys. When converting CSV to JSON, empty cells are usually converted to null or empty strings, ensuring your data structure remains valid but faithful to the source.
What delimiter does the CSV parser use?
By default, the standard delimiter is a comma (,). However, some regions use semicolons (;) (especially where commas are used for decimal points). If your data looks jumbled, check if your CSV uses tabs or semicolons and ensure the input format is standard.
Is the JSON output minified or pretty-printed?
Our tool generates pretty-printed JSON (with indentation) by default to make it human-readable. If you need to minify it (remove whitespace) for production use, you can pass the result through a JSON Minifier tool.
Can I use this for API mocking?
Absolutely. Developers often receive data in Excel/CSV from clients. You can use this tool to convert that spreadsheet data into a JSON array, which you can then paste directly into your frontend code or a mock database (like json-server) to prototype your application immediately.
Does it support Unicode/Emoji characters?
Yes, our converter supports full UTF-8 encoding. Meaning your emojis 🚀, accented characters (é, ñ), and scripts like Kanji or Cyrillic will be preserved perfectly during the conversion process.
What happens if my JSON is invalid?
The tool requires valid JSON syntax. Common errors include trailing commas, single quotes instead of double quotes, or missing brackets. If the conversion fails, check your JSON syntax using a linter or ensure you copied the entire object range.