HTTP Status Code Reference — Free Online Tool
A searchable reference for all standard HTTP status codes — 1xx informational, 2xx success, 3xx redirection, 4xx client error, and 5xx server error. Each entry includes the name, description, and RFC reference. Filter by category or search by code number, name, or description.
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How to use HTTP Status Code Reference
- Type a status code, name, or keyword in the search box.
- Filter by category (1xx, 2xx, 3xx, 4xx, 5xx) using the category pills.
- Read the description and RFC reference for any status code.
- Use the browser's copy function to grab the code or name.
Frequently Asked Questions
What is the difference between 401 and 403?
401 Unauthorized means authentication is required or failed. 403 Forbidden means authentication won't help — the server refuses the action regardless of credentials.
When should I use 422 vs 400?
400 Bad Request is for malformed syntax or invalid structure. 422 Unprocessable Content is for requests that are syntactically valid but semantically incorrect (e.g., validation errors).
What does 418 mean?
I'm a Teapot is an April Fools' joke from 1998 (RFC 2324). It's technically a real status code but has no practical use.
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