Conversion Tool
cURL to JavaScript Fetch Converter
Convert cURL commands to JavaScript fetch snippets.
cURL to fetch Converter
Convert common curl commands to JavaScript fetch snippets.
Overview
Use this converter to move tested terminal requests into JavaScript applications without rewriting headers and body by hand.
How to convert cURL to fetch
Converting a cURL command to JavaScript fetch() takes seconds with this tool. Paste your cURL command — including flags like -X for the HTTP method, -H for request headers, and -d for the request body — and the converter generates equivalent fetch() code instantly. The converter handles common cURL patterns including POST requests with JSON bodies, authorization headers, and custom Content-Type values. The output is clean, copy-ready JavaScript code. Always review the generated snippet before using it in production, especially to add proper error handling and secure token management.
cURL to Axios converter
If you prefer Axios over the native fetch() API, the companion cURL to Axios Converter tool on this site generates Axios request objects from the same cURL syntax. Axios provides a promise-based HTTP client with automatic JSON parsing, request and response interceptors, and broader compatibility across older environments. Both converters accept standard cURL commands and produce clean JavaScript code. Whether you are integrating API documentation examples, migrating shell scripts to JavaScript, or testing endpoints from Postman exports, these converters eliminate manual translation errors.
Why convert cURL to JavaScript?
cURL is the de facto standard for testing and documenting HTTP API requests. API documentation portals, Postman, Insomnia, and most developer consoles provide cURL examples for every endpoint. When building a JavaScript application, you need to translate these cURL examples into fetch() or Axios calls — a repetitive task that is easy to get wrong when dealing with headers, body encoding, or HTTP method inference. This converter automates the translation so you can focus on application logic rather than HTTP plumbing, reducing integration time and copy-paste mistakes.
Examples
POST request conversion
Input
curl -X POST "https://api.example.com/users" -H "Content-Type: application/json" -d "{\"name\":\"John\"}"Output
fetch("https://api.example.com/users", { method: "POST", ... });Simple GET conversion
Input
curl "https://api.example.com/users"Output
fetch("https://api.example.com/users");Use cases
- Move API docs cURL examples into app code.
- Reduce manual conversion mistakes.
- Speed up API integration prototypes.
FAQ
Which curl flags are supported?
Common flags like -X, -H, -d, --data, --header, and --url are supported.
Does it support multipart uploads?
Not fully. Complex multipart commands may need manual edits after conversion.
Will GET requests include an options object?
Only when headers or a body are present in the original cURL command.
Is this suitable for production code as-is?
Use the output as a baseline and always review auth handling and error management before deploying.