HTTP Status Code Lookup - Free Online Tool
HTTP Status Code Lookup
Look Up the Meaning of Any HTTP Status Code
Understanding HTTP Status Code Classes
2xx Success
Codes in the 200s mean the request was received, understood, and processed successfully.
3xx Redirection
Codes in the 300s indicate the client must take additional action, usually following a new URL.
4xx / 5xx Errors
400s indicate a client-side problem (bad request, unauthorized); 500s indicate a server-side failure.
Client-Side Only
All lookups happen locally in your browser against a bundled reference table — no data is ever sent to a server.
Why Categories Matter for Debugging
Even for a status code not explicitly listed in this reference, knowing its first digit tells you the general category: a 4xx you don't recognize is still a client-side problem, and a 5xx still indicates something failed on the server. This lets you triage an unfamiliar status code correctly even before looking up its exact meaning.
Key Takeaways
- Full Range Covered: Accepts any code from 100-599 and reports its category even if not individually listed.
- Standard Codes Included: Covers the codes most commonly encountered in web development and API work.
- Client-Side Only: All lookups happen locally in your browser — no data is ever sent to a server.