Encode URL Parameters
Manually constructing URL query strings with special characters is error-prone. This tool takes key-value pairs and produces a properly percent-encoded query string, handling all edge cases like ampersands in values and Unicode characters.
Open URL Encode & Decode →How to Encode URL Parameters
- Open the URL Encode/Decode tool on ToolPrime
- Enter your parameters as key-value pairs
- The tool builds the encoded query string automatically
- Copy the result and append it to your base URL
Common Use Cases
- Build complex API request URLs with multiple parameters
- Construct OAuth callback URLs with encoded redirect URIs
- Generate affiliate tracking links with encoded metadata
Frequently Asked Questions
Does this handle arrays in query parameters?▾
Yes, array values can be encoded using bracket notation (key[]=value1&key[]=value2) or comma-separated formats.
Are ampersands in values handled correctly?▾
Absolutely. Ampersands within values are encoded as %26 so they do not break the query string structure.