URL Encoder / Decoder
Encode text with percent-encoding for safe use in URLs, or decode percent-encoded strings back to readable text. See which characters were encoded.
About URL Encoding
URL encoding (percent-encoding) replaces unsafe or reserved characters in URLs with a "%" followed by two hexadecimal digits representing the character's UTF-8 byte value. For example, a space becomes %20, and an ampersand (&) becomes %26. This ensures URLs are transmitted correctly over the internet without ambiguity. For another common encoding format, try our Base64 Encoder/Decoder.
Reserved characters like /, ?, #, &, and = have special meaning in URL syntax and must be encoded when they appear in query string values. The JavaScript encodeURIComponent() function encodes all characters except letters, digits, and the unreserved marks (-, _, ., !). This is the recommended function for encoding individual URL components. For secure password management alongside your web development work, our Password Generator creates cryptographically strong passwords.
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For a related calculation, use Password Generator to generate cryptographically secure passwords with entropy calculation and strength rating. Alternatively, use Base64 Encoder/Decoder to encode text to Base64 or decode Base64 strings with UTF-8 support and character count display.