HTTP status codes are three-digit numbers that servers send back to tell you what happened with your request. If you're building APIs, debugging network issues, or just curious why a page won't load, knowing your status codes saves a lot of time. This tool covers every standard status code from 100 to 511 with plain-English explanations. Search by number, name, or keyword to find what you're looking for.

All standard HTTP status codes from 1xx to 5xx

Search by code number, name, or description

Filter by category with one click

Color-coded categories for quick scanning

Copy any status code to your clipboard

Runs entirely in your browser, nothing leaves your device

HTTP Status Code Explorer

1xx Informational

2xx Success

3xx Redirection

4xx Client Error

5xx Server Error

About this tool