URL Encoder / Decoder

Encode or decode URLs and query strings instantly. Supports encodeURIComponent and encodeURI modes, 40 character sets for global use, a full URL parser, batch line mode, and live conversion as you type. All processing happens in your browser — your data never leaves your device.

🔒 Processed in your browser — your data never leaves your device

Mode:

Function:

Spaces as:

Character set:

Batch mode (encode/decode each line separately):

Off

Live mode (convert as you type):

Off

Input 0 chars

Output 0 chars

Input: —

Output: —

Input size: —

Output size: —

Chars encoded: —

Results may vary. Always verify critical data.

Component	Value	Decoded

Character	Encoded	Description
Space	%20	Space (also + in form encoding)
!	%21	Exclamation mark
#	%23	Hash / fragment identifier
$	%24	Dollar sign
%	%25	Percent sign (the encoding prefix itself)
&	%26	Ampersand — separates query parameters
+	%2B	Plus sign (used as space in form encoding)
/	%2F	Forward slash — path separator
:	%3A	Colon — used in protocol and host
?	%3F	Question mark — starts query string
@	%40	At sign — used in email and auth URLs
=	%3D	Equals sign — separates key from value
[	%5B	Left square bracket
]	%5D	Right square bracket
é	%C3%A9	e with accent (UTF-8, 2 bytes)
日	%E6%97%A5	Japanese character (UTF-8, 3 bytes)

How to Use the URL Encoder / Decoder

Paste Your Text or URL

Paste the text you want to encode — or a percent-encoded string you want to decode — into the input box on the left. Not sure what to try? Click Example to load a sample URL with special characters.

Choose Your Options

Select Encode or Decode mode. Choose your encoding function — encodeURIComponent for individual parameter values, encodeURI for complete URLs. Pick whether spaces should appear as %20 (standard) or + (form encoding). For international text, select the appropriate character set from the dropdown — UTF-8 is correct for almost all modern use cases.

Convert and Review

Click Encode or Decode, or turn on Live mode to convert automatically as you type. The stats bar shows input length, output length, byte sizes, and how many characters were encoded. Enable Batch mode to process multiple entries separated by line breaks.

Copy, Swap, or Parse

Click Copy to copy the result to your clipboard. Click Swap to move the output back to the input for further processing — useful when chaining operations. Expand the URL Parser below the tool to break any full URL into its protocol, host, path, query parameters, and fragment.

Frequently Asked Questions

What is URL encoding and why is it needed?

What is the difference between encodeURIComponent and encodeURI?

When should I use + instead of %20 for spaces?

Which character set should I choose?

Is my data safe and private?

URL Encoder / Decoder

How to Use the URL Encoder / Decoder

Frequently Asked Questions

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