Back to all tools

HTTP Status Codes Reference

Complete reference for all standard HTTP status codes with descriptions, grouped by category.

Search Status Codes29 codes
1xxInformational
3 codes
100
Continue
The server has received the request headers and the client should proceed to send the request body.
101
Switching Protocols
The server is switching protocols as requested by the client (e.g., from HTTP to WebSocket).
102
Processing
The server has received and is processing the request, but no response is available yet.
2xxSuccess
5 codes
200
OK
The request was successful. The meaning of success depends on the HTTP method used.
201
Created
The request was fulfilled and a new resource was created. Typically returned after POST.
202
Accepted
The request has been accepted for processing, but the processing is not complete.
204
No Content
The server successfully processed the request but is not returning any content.
206
Partial Content
The server is delivering only part of the resource due to a range header sent by the client.
3xxRedirection
5 codes
301
Moved Permanently
The URL of the requested resource has been changed permanently. The new URL is given in the response.
302
Found
The URI of the requested resource has been changed temporarily. The client should use the original URI.
304
Not Modified
Indicates that the resource has not been modified since the version specified in the request headers.
307
Temporary Redirect
The request should be repeated with another URI but future requests can still use the original URI.
308
Permanent Redirect
The resource has been permanently moved to another URI. The request method should not be changed.
4xxClient Error
11 codes
400
Bad Request
The server cannot process the request due to malformed syntax or invalid request message framing.
401
Unauthorized
Authentication is required and has failed or has not been provided.
403
Forbidden
The server understood the request but refuses to authorize it. No re-authentication will help.
404
Not Found
The server cannot find the requested resource. The URL is not recognized or the resource doesn't exist.
405
Method Not Allowed
The request method is known by the server but is not supported by the target resource.
408
Request Timeout
The server timed out waiting for the request. The client may repeat the request without modifications.
409
Conflict
The request could not be processed because of a conflict in the current state of the resource.
410
Gone
The requested resource is no longer available and will not be available again. It has been permanently removed.
413
Payload Too Large
The request entity is larger than limits defined by the server.
422
Unprocessable Entity
The server understands the content type but was unable to process the contained instructions.
429
Too Many Requests
The user has sent too many requests in a given amount of time (rate limiting).
5xxServer Error
5 codes
500
Internal Server Error
A generic error message when the server encountered an unexpected condition.
501
Not Implemented
The server does not support the functionality required to fulfill the request.
502
Bad Gateway
The server, acting as a gateway, received an invalid response from an upstream server.
503
Service Unavailable
The server is not ready to handle the request — typically due to maintenance or overload.
504
Gateway Timeout
The server, acting as a gateway, did not get a response in time from an upstream server.

About HTTP Status Codes

HTTP Status Codes provides a comprehensive, searchable reference for all standard HTTP status codes from 1xx to 5xx. Each code includes its official name, a plain-English description, and common use cases. Bookmark this tool for quick lookups during API development.

  • All 1xx–5xx status codes covered
  • Searchable by code or name
  • Plain-English descriptions
  • Common use cases for each code

Related Tools

JSON Formatter
Format and validate JSON data
JSON Minifier
Minify JSON to save bytes
Base64 Encoder
Encode and decode Base64 strings
QR Code Generator
Generate QR codes instantly
Password Generator
Generate strong secure passwords
SQL Beautifier
Format and beautify SQL queries