Free Online URL Encoder Tool

URLs can only contain a limited set of characters from the ASCII character set. When you need to include spaces, special characters, or non-ASCII characters (like accented letters or emoji) in a URL, they must be percent-encoded to ensure the URL works correctly across all browsers and servers.

Our free online URL encoder instantly converts any text into its percent-encoded equivalent. Each special character is replaced with a percent sign followed by its two-digit hexadecimal value — for example, a space becomes %20, an ampersand becomes %26, and a question mark becomes %3F.

This tool is essential for web developers building API requests with query parameters. When you construct URLs programmatically and include user input in query strings, encoding prevents broken URLs and potential security issues. For example, a search query like 'coffee & tea' must be encoded as 'coffee%20%26%20tea' to work correctly as a URL parameter.

Frontend developers use URL encoding when building dynamic links, handling form submissions via GET requests, and constructing redirect URLs. Backend developers need it for building API endpoints, handling webhook URLs, and constructing OAuth callback URLs.

The tool handles all standard URL encoding requirements including: RFC 3986 reserved characters, spaces (encoded as %20), non-ASCII Unicode characters, and special characters used in HTML. It processes text instantly with no server-side processing, keeping your data private.

Whether you are debugging URL issues, building API integrations, or simply need to make a string URL-safe, this tool handles the encoding correctly and instantly.