📋HTTP Status Code Reference
Look up HTTP status codes with descriptions, categories, and use cases.
The server received the request headers and the client should proceed.
The request was successful.
A resource was successfully created.
The request succeeded but there is no content to return.
The resource has been permanently moved to a new URL.
The resource temporarily resides at a different URL.
The resource has not changed since the last request.
The server cannot process the request due to a client error.
Authentication is required and has failed or not been provided.
The server understood the request but refuses to authorize it.
The requested resource could not be found.
The HTTP method is not supported for this resource.
The request conflicts with the current state of the resource.
The request was well-formed but semantically incorrect.
The user has sent too many requests in a given time (rate limiting).
The server encountered an unexpected condition.
The server received an invalid response from an upstream server.
The server is temporarily unavailable.
The upstream server failed to respond in time.
About HTTP Status Code Reference
Browse and search a comprehensive reference of HTTP status codes organized by category. Each code includes its name, category (1xx–5xx), and a clear description of what it means and when it is used. Filter by category or search by code number or name.
How to Use HTTP Status Code Reference
- 1
Search or browse
Type a code number or name, or filter by category to find what you need.
- 2
Read the description
Each entry explains what the code means and when it is returned.
- 3
Apply to your project
Use the information to correctly implement or interpret HTTP responses.
Common Use Cases
- Quickly looking up unfamiliar HTTP response codes
- Choosing the correct status code for API responses
- Debugging web application HTTP errors
- Learning HTTP protocol for web development
Frequently Asked Questions
What are the HTTP status code categories?
What is the difference between 401 and 403?
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