URL Encoder & Decoder

Free online URL encoder and decoder. Encode special characters for URLs or decode percent-encoded strings instantly.

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Text to Encode0 chars

URL-Encoded Output

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URL Encoding Reference

→ %20

Space

& → %26

Ampersand

= → %3D

Equals

? → %3F

Question mark

/ → %2F

Forward slash

# → %23

Hash

+ → %2B

Plus

@ → %40

At sign

encodeURI vs encodeURIComponent

encodeURIComponent: Encodes all special characters including /, ?, &, =, #. Use for encoding URL parameter values.

encodeURI: Preserves URL structure characters (/, ?, &, =, #, :). Use for encoding entire URLs while keeping them valid.

encodeURIComponent("a=b&c=d") → "a%3Db%26c%3Dd"

encodeURI("a=b&c=d") → "a=b&c=d" (unchanged)

Related URL Tools

URL Encoder URL Decoder Query String Encoder Form Data Encoder JavaScript URL Encoding API Parameter Encoder

How to Use

Select 'Encode' to URL-encode text, or 'Decode' to decode percent-encoded strings
Paste your text or URL into the input box
Click the 'Encode' or 'Decode' button
Copy the result from the output box
Use the 'Swap' button to use the output as new input

Example

Input

Hello World! How are you?

Output

Hello%20World%21%20How%20are%20you%3F

FAQ

What is URL encoding?

URL encoding (also called percent-encoding) converts special characters to a format that can be safely transmitted in URLs. For example, a space becomes %20 and & becomes %26.

When should I URL encode?

URL encode when passing special characters in query parameters, form data, or any URL that contains spaces, ampersands, equals signs, or non-ASCII characters.

What's the difference between encodeURI and encodeURIComponent?

encodeURIComponent encodes more characters (including /, ?, &, =) and is used for encoding URL parameters. encodeURI is used for encoding entire URLs while preserving the structure.