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URL Encoder & Decoder
Convert text into URL-safe form or decode percent-encoded text.
How to use
These are example steps; replace the values for your task.
- Choose Encode and enable whole-URL mode.
- Turn off the option that treats spaces as +, then enter the entire URL.
- Check that /, ?, & and = remain, while the space becomes %20.
Converted text
0 characters
About this tool
Prepare search terms, query values, and non-ASCII paths for safe use in URLs.
A URL component encodes spaces, accented text and percent signs separately
Encoding “café A%20” as a component gives “caf%C3%A9%20A%2520”. The existing %20 is treated as text, so its percent sign becomes %25.
- Encoding an already encoded value produces double encoding. Keep track of the original value and how many times it has been processed.
- A full URL and a query value preserve different punctuation. Leave Full URL off when you are encoding only one component.
Try a use case and check the result
Encode a parameter value so it can be distinguished from URL separators.
Try this example replaces the input and settings. Restore previous input returns to the state before the latest example. Normal draft-saving rules apply.
After trying multiple examples, repeat Restore previous input to return to your original input. History is kept only in this page; restore any input you need before closing it.
Encode an ampersand and space inside a value
Input and settings
A&B C
Whole URL: Off; Spaces as +: Off; Operation: Encode
Expected result
A%26B%20C
How to read the result
This example is one value, not a whole URL. %26 represents a literal ampersand; %20 represents a space.
Scope and pitfalls
Re-encoding an already encoded value can double-encode it. Check whether the source treats + as a space.
When a plus sign must remain a plus sign
With “Treat spaces as +” enabled, decoding A+B produces A B. Disable that option to keep a literal plus sign. With whole-URL mode off, an encoded literal plus, %2B, decodes to + even when “Treat spaces as +” is enabled. Whole-URL mode preserves %2B. Check whether the source uses form encoding or ordinary URL components.
Continue with the next task
Frequently asked questions
What is the difference between a full URL and a URL component?
Full URL mode keeps characters such as /, :, ?, &, and =. Leave it off when encoding a query value or path segment.
What happens with invalid encoded text?
An error message appears and the result is cleared.
Is my text sent to a server?
No. Conversion and storage take place only in your browser.
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Inputs and storage
Keep a separate copy before clearing or resetting. This browser autosaves entered text and tool settings. Data is not restored when read 30 days or more after its last save. Clearing site data or storage restrictions may remove it sooner.
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