Category: Developer tools
HTTP Status Code Lookup
Search every HTTP status code and what it means
Search the full range of HTTP status codes — 1xx through 5xx — by number, name or keyword, and read a short, practical explanation of what each one means. Runs entirely in your browser from a bundled reference table.
62 codes
| Code | Name | Category | Meaning |
|---|---|---|---|
| 100 | Continue | 1xx Informational | The initial part of the request was received; the client should continue. |
| 101 | Switching Protocols | 1xx Informational | The server is switching protocols as requested by Upgrade. |
| 102 | Processing | 1xx Informational | The server has received the request and is still processing it. |
| 103 | Early Hints | 1xx Informational | Preload or preconnect hints sent before the final response. |
| 200 | OK | 2xx Success | The request succeeded. |
| 201 | Created | 2xx Success | The request succeeded and a new resource was created. |
| 202 | Accepted | 2xx Success | The request was accepted for processing but is not complete. |
| 203 | Non-Authoritative Information | 2xx Success | The payload was transformed by a proxy from the origin response. |
| 204 | No Content | 2xx Success | The request succeeded but there is no content to send. |
| 205 | Reset Content | 2xx Success | The client should reset the document view that sent the request. |
| 206 | Partial Content | 2xx Success | Only part of the resource is being sent, per a Range header. |
| 207 | Multi-Status | 2xx Success | A WebDAV response conveying status for multiple sub-requests. |
| 208 | Already Reported | 2xx Success | A WebDAV binding was already enumerated in a previous reply. |
| 226 | IM Used | 2xx Success | The server fulfilled the request using instance manipulations. |
| 300 | Multiple Choices | 3xx Redirection | The request has more than one possible response. |
| 301 | Moved Permanently | 3xx Redirection | The resource has been permanently moved to a new URL. |
| 302 | Found | 3xx Redirection | The resource is temporarily at a different URL. |
| 303 | See Other | 3xx Redirection | The response can be found under a different URL using GET. |
| 304 | Not Modified | 3xx Redirection | The resource has not changed since the last request; use the cache. |
| 305 | Use Proxy | 3xx Redirection | Deprecated: the requested resource must be accessed through a proxy. |
| 307 | Temporary Redirect | 3xx Redirection | The resource is temporarily at a different URL; method must not change. |
| 308 | Permanent Redirect | 3xx Redirection | The resource has permanently moved; method must not change. |
| 400 | Bad Request | 4xx Client Error | The server cannot process the request due to a client error. |
| 401 | Unauthorized | 4xx Client Error | Authentication is required and has failed or not been provided. |
| 402 | Payment Required | 4xx Client Error | Reserved for future use. |
| 403 | Forbidden | 4xx Client Error | The server understood the request but refuses to authorize it. |
| 404 | Not Found | 4xx Client Error | The server can not find the requested resource. |
| 405 | Method Not Allowed | 4xx Client Error | The request method is not supported for this resource. |
| 406 | Not Acceptable | 4xx Client Error | No content matching the Accept headers was found. |
| 407 | Proxy Authentication Required | 4xx Client Error | The client must authenticate with the proxy first. |
| 408 | Request Timeout | 4xx Client Error | The server timed out waiting for the request. |
| 409 | Conflict | 4xx Client Error | The request conflicts with the current state of the resource. |
| 410 | Gone | 4xx Client Error | The resource is no longer available and will not come back. |
| 411 | Length Required | 4xx Client Error | The request did not specify the length of its content. |
| 412 | Precondition Failed | 4xx Client Error | A precondition in the request headers was not met. |
| 413 | Payload Too Large | 4xx Client Error | The request entity is larger than the server can handle. |
| 414 | URI Too Long | 4xx Client Error | The requested URI is longer than the server can interpret. |
| 415 | Unsupported Media Type | 4xx Client Error | The media format of the request is not supported. |
| 416 | Range Not Satisfiable | 4xx Client Error | The requested range cannot be satisfied. |
| 417 | Expectation Failed | 4xx Client Error | The Expect header could not be met by the server. |
| 418 | I'm a Teapot | 4xx Client Error | An April Fools' joke status code from RFC 2324. |
| 421 | Misdirected Request | 4xx Client Error | The request was directed at a server unable to produce a response. |
| 422 | Unprocessable Entity | 4xx Client Error | The request was well-formed but semantically incorrect. |
| 423 | Locked | 4xx Client Error | The resource that is being accessed is locked. |
| 424 | Failed Dependency | 4xx Client Error | The request failed because a prior dependent request failed. |
| 425 | Too Early | 4xx Client Error | The server is unwilling to risk processing a replayable request. |
| 426 | Upgrade Required | 4xx Client Error | The client should switch to a different protocol. |
| 428 | Precondition Required | 4xx Client Error | The origin server requires the request to be conditional. |
| 429 | Too Many Requests | 4xx Client Error | The client has sent too many requests in a given time. |
| 431 | Request Header Fields Too Large | 4xx Client Error | The header fields are too large for the server. |
| 451 | Unavailable For Legal Reasons | 4xx Client Error | The resource is unavailable for legal reasons. |
| 500 | Internal Server Error | 5xx Server Error | The server encountered an unexpected condition. |
| 501 | Not Implemented | 5xx Server Error | The server does not support the functionality required. |
| 502 | Bad Gateway | 5xx Server Error | The server, acting as a gateway, got an invalid response. |
| 503 | Service Unavailable | 5xx Server Error | The server is not ready to handle the request. |
| 504 | Gateway Timeout | 5xx Server Error | The server, acting as a gateway, did not get a response in time. |
| 505 | HTTP Version Not Supported | 5xx Server Error | The HTTP version used in the request is not supported. |
| 506 | Variant Also Negotiates | 5xx Server Error | Transparent content negotiation resulted in a circular reference. |
| 507 | Insufficient Storage | 5xx Server Error | The server is unable to store the representation needed. |
| 508 | Loop Detected | 5xx Server Error | The server detected an infinite loop while processing the request. |
| 510 | Not Extended | 5xx Server Error | Further extensions to the request are required. |
| 511 | Network Authentication Required | 5xx Server Error | The client needs to authenticate to gain network access. |
Everything on this page is processed in your browser. Nothing is uploaded.
What this tool does
Every HTTP response carries a three-digit status code that tells the client what happened: 2xx for success, 3xx for a redirect, 4xx for a client mistake, 5xx for a server failure. This tool bundles the IANA-registered codes with a plain-language description, so you can check what a code means or find the right one to return without leaving your editor.
How to use it
- Type a status code, its name, or a keyword like "rate limit".
- Optionally narrow the results to one category (1xx–5xx).
- Read the short explanation for the matching code.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- Where does this list come from?
- A local table of the codes registered with IANA, covering every code a typical web API or browser interaction returns. It does not call any server.
- What's the difference between 401 and 403?
- 401 Unauthorized means the request needs valid authentication credentials; 403 Forbidden means the server understood who you are but refuses to authorize the action anyway.
- Why does 418 exist?
- "I'm a Teapot" comes from a 1998 April Fools' RFC. It's rarely used seriously, though some APIs use it as an easter egg.