Practical guide
URL Encode Chinese Characters for Query Parameters
URLs can contain international text, but query parameters often need percent encoding to travel safely through browsers, APIs, forms, redirects, and logs.
Open the free toolStep-by-step
- Identify the parameter value you need to encode, not the whole URL.
- Paste only that value into the URL encoder.
- Encode the text into percent-encoded output.
- Place the encoded value after the correct query parameter name.
- Test the final URL in a browser or API client.
- Decode the value later when you need to inspect or debug it.
Important tips
- Encode parameter values rather than blindly encoding an entire URL.
- Spaces can appear as %20 or + depending on the context.
- Chinese and Japanese characters are normally encoded through UTF-8 bytes.
- Double encoding is a common bug: %E4 can become %25E4 if encoded again.
Frequently asked questions
Why do Chinese characters become percent codes?
They are converted to UTF-8 bytes and then represented with percent encoding for URL safety.
Should I encode the whole URL?
Usually no. Encode individual query parameter values.
What is double encoding?
It happens when an already encoded value is encoded again, often turning % into %25.