Free Online Data Conversion Tools
Convert JSON, CSV, and XML files instantly — no uploads, no signups, everything happens in your browser. Your data never leaves your device.
JSON → CSV Converter
Convert JSON objects and arrays into CSV spreadsheets. Flattens nested data automatically.
Most PopularCSV → JSON Converter
Parse CSV files and transform them into structured JSON arrays for APIs and applications.
API-Ready OutputXML → JSON Converter
Convert XML documents into clean, readable JSON. Preserves structure and attributes.
Structured DataJSON → XML Converter
Transform JSON data into well-formed XML documents for legacy systems and SOAP APIs.
Enterprise ReadyCSV → ICS Converter
Convert CSV spreadsheet event lists into iCalendar (.ics) files. Import into Google Calendar, Outlook, or Apple Calendar.
Calendar EventsICS → CSV Converter
Extract calendar events from .ics files into CSV spreadsheets. Parse Google Calendar, Outlook, and Apple Calendar exports.
Event ExtractionWhy Use Our Data Conversion Tools?
Every tool on this site runs entirely in your browser — no uploads, no accounts, no limits. Paste your data, click convert, and get results instantly. All processing is client-side JavaScript, verified by your browser's Network tab.
Read our conversion guides → for format deep-dives, encoding tips, and troubleshooting.
JSON vs CSV vs XML — When to Use Each Format
| Format | Best For | Examples |
|---|---|---|
| JSON | Web APIs, configuration files, modern apps | REST API responses, package.json, Firebase data |
| CSV | Spreadsheets, data analysis, bulk imports | Excel exports, SQL imports, Google Sheets |
| XML | Enterprise systems, SOAP APIs, document markup | Sitemaps, RSS feeds, legacy enterprise data |
Most developers work primarily with JSON today, but CSV remains the universal language of spreadsheets and data import/export, while XML still powers enterprise integrations and document formats. Having reliable converters for all three saves hours of manual reformatting. For a deeper comparison with ICS/iCalendar format, see our full format comparison guide →
Getting Started — Choose Your Conversion
Not sure which tool to use? Here's a quick guide based on what you need:
- Exporting API data to a spreadsheet? Use the JSON to CSV converter. Most REST APIs return JSON; convert it to CSV and open directly in Excel or Google Sheets with one click.
- Importing a spreadsheet into your app? Use the CSV to JSON converter. Paste your CSV data, and get back a clean JSON array ready for JavaScript, Python, or any API.
- Working with enterprise XML data? Use the XML to JSON converter to transform legacy XML feeds and SOAP responses into modern JSON. Or go the other way with the JSON to XML converter when you need to produce XML for downstream systems.
- Need to convert in bulk? All four tools work with multi-megabyte files directly in your browser, with no file-size limits and no uploads required.
Data Security — Your Data Stays Yours
All processing runs locally in your browser via JavaScript. Zero server uploads, zero storage, zero logging — verify it yourself in the Network tab. Unlike server-side converters that can see or mine your data, this architecture means we never receive your files at all.