URL Encode

Encode to URL-encoded format or decode from it with various advanced options. Our site has an easy to use online tool to convert your data.

URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Locator (URL) under certain circumstances. Although it is commonly referred to as URL encoding, it is, in fact, used more broadly within the main Uniform Resource Identifier (URI) set, which includes both URLs (Uniform Resource Locator) and URNs (Uniform Resource Name). It is also used in the preparation of data of the "application/x-www-form-urlencoded" media type, frequently seen in the submission of HTML form data in HTTP requests.

Purpose of URL Encoding

Encoding Special Characters: The primary purpose of URL encoding is to encode certain characters that are not allowed in a URL or have special meanings in the URI scheme. This includes characters such as spaces, punctuation, and other non-ASCII characters.

Avoiding Misinterpretation: URL encoding prevents characters that could be interpreted in a way that would alter the intended semantics of the URL. For example, characters like the ampersand (&) and the question mark (?) have special meanings in URLs, so they must be encoded to avoid confusion.

Ensuring Data Integrity: By encoding these characters, URL encoding ensures the integrity and reliability of web communication. It allows URLs to be safely transmitted and interpreted by web browsers and servers without losing or corrupting the data.

How URL Encoding Works

Percent-Encoding: In URL encoding, certain characters are replaced with a percent sign (%) followed by two hexadecimal digits representing the ASCII or UTF-8 code of the character.

Common Encodings:

  • Space: Encoded as %20
  • Comma: Encoded as %2C
  • Ampersand: Encoded as %26
  • Plus Sign: Encoded as %2B
  • Slash: Encoded as %2F
  • Question Mark: Encoded as %3F

Using URL Encode Tools

Step 1: Input the String: Enter the string you wish to encode into the URL encode tool.

Step 2: Click Encode: Initiate the encoding process by clicking the "Encode" button.

Step 3: Get the Encoded URL: The tool will output the encoded URL, displaying percent-encoded characters.

Benefits of Using URL Encode Tools

Free and Accessible: Many URL encode tools are available online for free, making them easily accessible from any device with an internet connection.

User-Friendly Interface: These tools typically offer a simple interface, requiring minimal input to get the desired encoded output.

Time-Saving: Automatically encoding URLs saves time and reduces the risk of errors compared to manual encoding.

Versatile Usage: URL encode tools are useful for web developers, data analysts, and anyone working with URLs in web applications or APIs.

Practical Applications

Form Data Submission: When data is submitted from a web form using the GET method, the form data is appended to the URL in the query string. URL encoding is applied to encode any characters that could be misinterpreted.

Query Strings: In web applications, query strings are used to pass data to the server. URL encoding ensures that special characters in the query string are interpreted correctly.

APIs and Web Services: When making API calls, URL encoding is essential to ensure that the data sent in the URL is correctly received and processed by the server.


URL encoding is a vital process for ensuring the accuracy and reliability of web communication. By converting special characters to percent-encoded sequences, URL encode tools help maintain data integrity and prevent misinterpretation of URLs. Try using a free online URL encode tool today to experience the ease and efficiency of encoding URLs!