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URL Encoder / Decoder

Percent-encode text for URLs or decode an encoded URL.

Processed locally in your browser.

Mode

Understanding your result

Use this for query-string values and parameters so special characters do not break the link.

Formula and method

Encoding replaces unsafe characters with a “%” followed by their hex byte values (encodeURIComponent); decoding reverses the process.

Worked example

“a b&c” encodes to “a%20b%26c”.

How to use this tool

  1. Choose Encode or Decode.
  2. Paste your input.
  3. Copy the result.

Common mistakes to avoid

  • Decoding a string that contains an invalid percent sequence.

About the URL Encoder / Decoder

Make text safe to include in a URL by percent-encoding special characters, or decode an encoded URL back to normal text.

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Frequently asked questions

Component or full URL?

This encodes for component values (the safest default), so reserved characters like & and ? are escaped.