HTTP Status Codes

Searchable list of HTTP status codes and what they mean, from 200 OK to 404 and 500. Free developer reference.

Look Up HTTP Status Code Meanings

HTTP Status Codes Dictionary is a searchable reference for every standard HTTP response code — from 100 Continue to 599 Network Connect Timeout Error — with a plain-language explanation of what each one means.

How to use

Browse the list, or search for a specific status code.
Click a code to read its full explanation.
Use the category grouping (1xx–5xx) to understand a code’s general meaning.

Common use cases

Understanding what a 429 or 503 response from an API actually means.
Looking up the correct status code to return from your own API.
Explaining an error code to a non-technical teammate or client.

More Web Utilities

IP Locator — Find geographic details of an IP or domain.
Regex Tester — Test regular expressions directly in the browser.
JS Keycode Info — Get Javascript event keycodes instantly.