JSON to CSV Converter API

Export JSON data to CSV spreadsheet format instantly. Perfect for Excel integration, business reporting, data analysis, and seamless integration with BI tools and analytics platforms.

✓ Excel-ready format
✓ Handles nested objects
✓ UTF-8 encoding support
🚀 Start Converting for Free
✓ 100 free conversions monthly ✓ No credit card ✓ Instant setup

How to Convert JSON to CSV

Input: JSON Data

[ { "name": "John Doe", "age": 30, "department": "Engineering", "city": "New York", "salary": 75000, "skills": ["JavaScript", "Python"] }, { "name": "Jane Smith", "age": 25, "department": "Marketing", "city": "Los Angeles", "salary": 68000, "skills": ["SEO", "Analytics"] }, { "name": "Mike Johnson", "age": 32, "department": "Sales", "city": "Chicago", "salary": 72000, "skills": ["CRM", "Negotiation"] } ]

Structured JSON array with objects containing mixed data types, arrays, and nested information.

Output: CSV Format

name,age,department,city,salary,skills John Doe,30,Engineering,New York,75000,"JavaScript,Python" Jane Smith,25,Marketing,Los Angeles,68000,"SEO,Analytics" Mike Johnson,32,Sales,Chicago,72000,"CRM,Negotiation"

Clean CSV format with proper escaping, ready for Excel, Google Sheets, or database import.

JSON to CSV Processing Features

📊 Smart Column Mapping

Auto-detect: All unique keys as CSV columns

Custom order: Specify column sequence and filtering

🔗 Nested Data Handling

Flatten: Convert nested.key to "nested.key" column

Array stringify: Convert arrays to comma-separated strings

🧹 Data Formatting

Escape quotes: Proper CSV escaping for commas and quotes

Null handling: Custom representation for missing values

🎯 Excel Compatibility

UTF-8 BOM: Optional byte order mark for Excel

Date formats: Excel-compatible date serialization

📏 Large Datasets

Streaming: Process large JSON arrays efficiently

Memory: Optimized for enterprise data volumes

⚡ Output Options

Headers: Include/exclude column headers

Delimiter: Custom separators (comma, semicolon, tab)

API Usage Examples

Basic JSON to CSV Conversion

curl -X POST https://api.t3xtr.org/api/json-to-csv \ -H "X-API-Key: YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '[ {"name": "John Doe", "age": 30, "city": "New York"}, {"name": "Jane Smith", "age": 25, "city": "Los Angeles"} ]' # Response name,age,city John Doe,30,New York Jane Smith,25,Los Angeles

Advanced Conversion with Custom Options

curl -X POST https://api.t3xtr.org/api/json-to-csv \ -H "X-API-Key: YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "data": [ {"id": 1, "user": {"name": "John", "email": "john@example.com"}, "score": 95.5}, {"id": 2, "user": {"name": "Jane", "email": "jane@example.com"}, "score": 87.2} ], "options": { "includeHeaders": true, "flattenObjects": true, "columnOrder": ["id", "user.name", "user.email", "score"], "delimiter": ",", "nullValue": "N/A" } }'

Excel-Compatible Export

curl -X POST https://api.t3xtr.org/api/json-to-csv \ -H "X-API-Key: YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "data": [ {"date": "2024-01-15", "revenue": 15750.50, "region": "North America"}, {"date": "2024-01-16", "revenue": 12340.75, "region": "Europe"} ], "options": { "includeHeaders": true, "excelCompatible": true, "utfBom": true, "dateFormat": "excel" } }'

Common JSON to CSV Use Cases

📊 Business Reporting

Export API data, sales reports, and analytics to Excel-compatible CSV for stakeholder presentations and business intelligence.

Perfect for: Executive dashboards, quarterly reports, KPI tracking

🗄️ Data Migration

Convert JSON exports from modern APIs to CSV format for import into legacy systems and traditional databases.

Perfect for: System migration, data warehousing, ETL processes

📈 Financial Analysis

Export transaction data, revenue reports, and financial metrics to CSV for accounting software and financial modeling.

Perfect for: Accounting systems, budget analysis, financial forecasting

👥 HR & Employee Data

Convert employee records, payroll data, and HR metrics from JSON APIs to CSV for HR management systems.

Perfect for: Payroll systems, HR analytics, employee reporting

🛒 E-commerce Analytics

Export product data, order history, and customer information to CSV for inventory management and business analysis.

Perfect for: Inventory tracking, sales analysis, customer segmentation

📋 Survey & Research Data

Transform survey responses, research data, and feedback from JSON format to CSV for statistical analysis tools.

Perfect for: Market research, academic studies, customer feedback analysis

Programming Language Examples

JavaScript/Node.js

const jsonData = [ {"name": "John Doe", "age": 30, "city": "New York"}, {"name": "Jane Smith", "age": 25, "city": "Los Angeles"} ]; const response = await fetch('https://api.t3xtr.org/api/json-to-csv', { method: 'POST', headers: { 'X-API-Key': 'YOUR_API_KEY', 'Content-Type': 'application/json' }, body: JSON.stringify(jsonData) }); const csv = await response.text();

Python

import requests import json json_data = [ {"name": "John Doe", "age": 30, "city": "New York"}, {"name": "Jane Smith", "age": 25, "city": "Los Angeles"} ] response = requests.post( 'https://api.t3xtr.org/api/json-to-csv', headers={'X-API-Key': 'YOUR_API_KEY'}, json=json_data ) csv_data = response.text

PHP

$jsonData = [ ["name" => "John Doe", "age" => 30, "city" => "New York"], ["name" => "Jane Smith", "age" => 25, "city" => "Los Angeles"] ]; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'https://api.t3xtr.org/api/json-to-csv'); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($jsonData)); curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'X-API-Key: YOUR_API_KEY', 'Content-Type: application/json' ]); $csv = curl_exec($ch);

Java

String jsonData = """ [ {"name": "John Doe", "age": 30, "city": "New York"}, {"name": "Jane Smith", "age": 25, "city": "Los Angeles"} ] """; HttpRequest request = HttpRequest.newBuilder() .uri(URI.create("https://api.t3xtr.org/api/json-to-csv")) .header("X-API-Key", "YOUR_API_KEY") .header("Content-Type", "application/json") .POST(HttpRequest.BodyPublishers.ofString(jsonData)) .build(); String csv = client.send(request, HttpResponse.BodyHandlers.ofString()).body();

Why Use T3XTR for JSON to CSV Conversion?

🚀 Lightning Fast

Convert JSON to CSV in under 100ms. Optimized for performance with streaming support for large datasets up to 50MB.

🧠 Smart Data Handling

Automatically flatten nested objects, handle arrays, and detect data types with configurable formatting options.

🔧 Excel Perfect

Generate CSV files that work flawlessly with Excel, Google Sheets, and other spreadsheet applications with proper encoding.

📊 Enterprise Ready

Process complex JSON with nested objects, arrays, mixed data types, and varying structures reliably at scale.

📁 Batch Processing

Convert multiple JSON datasets simultaneously. Process up to 25 datasets per request for efficient bulk operations.

🛠️ Developer Friendly

Simple REST API with comprehensive error handling. Works with any programming language and CI/CD pipeline.

Frequently Asked Questions

How are nested JSON objects handled?

T3XTR can flatten nested objects (user.name becomes a column) or stringify complex objects as quoted strings in CSV cells.

Can I control the column order?

Yes! Specify a custom column order array to control which fields appear and in what sequence in the CSV output.

What happens with arrays in JSON?

Arrays are converted to comma-separated strings within quoted CSV cells, making them Excel-compatible.

Is the output Excel-compatible?

Yes! T3XTR generates CSV files with proper escaping, encoding, and optional UTF-8 BOM for perfect Excel compatibility.

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