Why do URLs need encoding?

URLs can only contain certain characters. Encoding replaces unsafe characters (like spaces) with % sequences.

URL Encoder

URL-encode strings and query parameters online. Convert special characters to percent-encoded format for safe use in URLs and HTTP requests.

Plain URL / Text

URL-Encoded Output

What is URL Encoding?

URL encoding (also called percent-encoding) converts characters that are not allowed in a URL into a format that can be safely transmitted. Each unsafe character is replaced by a % followed by its two-digit hexadecimal ASCII value.

How to use this tool

Enter the URL component or string you want to encode
Click Encode to apply percent-encoding
Copy the encoded output for use in your URL or API request

Common use cases

Encoding query parameter values before appending to a URL
Encoding form data for application/x-www-form-urlencoded submissions
Making API requests with special characters in path segments
Constructing redirect URLs containing other URLs as parameters
Encoding search terms for use in URLs

Example

Input: hello world & more=data

Output: hello%20world%20%26%20more%3Ddata

Characters encoded

Spaces, &, =, +, ?, #, /, :, @, and other reserved or special characters are encoded.

Privacy

All processing happens in your browser. Nothing is transmitted.