HTTP Status Code Lookup
Look up common HTTP response codes, their standard reason labels, response class and a link to the official IANA registry.
Set your values
Adjust the values, then calculate your result.
How to use HTTP Status Code Lookup
- Enter a three-digit HTTP status code.
- Look up the included common-code label and its response class.
- Use the official registry reference for uncommon or recently assigned codes.
Separate the status code from application error text
The numeric status belongs to the HTTP response. A response body can contain a separate application code or message, and reason text in a server log is not always the canonical label. This offline reference covers common stable codes and identifies their informational, success, redirection, client-error or server-error class.
Use the registry for the complete current assignment
A valid three-digit number is not necessarily assigned, and this small reference does not list every code. Unknown entries are reported as absent from this reference rather than declared unassigned. The tool does not request a website or diagnose the cause of an error. Check the actual response headers and the relevant specification when behavior matters.
Does this check the live status of a URL?
No. It is an offline code lookup. It does not make requests to a supplied website.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.