Free Online Data Conversion Tools
Convert between JSON, CSV, and XML instantly — right in your browser. No uploads, no signup, your data never leaves your device.
JSON → CSV
Flatten JSON into a spreadsheet, with a live preview.
CSV → JSON
Parse CSV into a clean JSON array, with type inference.
XML → JSON
Turn XML feeds and SOAP responses into JSON.
JSON → XML
Produce XML for downstream/legacy systems.
CSV → ICS
Build calendar files from spreadsheet rows.
ICS → CSV
Export calendar events to a spreadsheet.
Scenarios →
Step-by-step recipes for common conversion tasks.
Guides →
Format references and how-tos.
JSON, CSV, and XML — When to Use Each
| Format | Best For | Examples |
|---|---|---|
| JSON | Web APIs, config files, modern apps | REST responses, package.json |
| CSV | Spreadsheets, data analysis, bulk imports | Excel exports, SQL imports |
| XML | Enterprise systems, SOAP, document markup | Sitemaps, RSS feeds |
JSON is the lingua franca of web APIs; CSV is the universal spreadsheet format; XML still powers enterprise integrations. See the full format comparison →
Getting Started — Choose Your Conversion
- Exporting API data to a spreadsheet? Use JSON to CSV — most REST APIs return JSON; convert and open in Excel or Sheets.
- Importing a spreadsheet into your app? Use CSV to JSON — get a clean JSON array for JavaScript, Python, or any API.
- Working with enterprise XML? Use XML to JSON for legacy feeds and SOAP responses, or JSON to XML to produce XML for downstream systems.
- Need a worked example? Browse the conversion scenarios for step-by-step recipes.
Your Data Stays Yours
Every conversion runs locally in your browser. Your files are never uploaded — there is no server to receive them. On the tool pages, after the page's static assets load, clicking Convert makes no network request; verify it yourself in the Network tab. How client-side processing protects your data →