Base64 Encoder & Decoder
Encode and decode text with Base64.
- Browser-based
- No signup
Developer
Encode text for use in URLs or decode URL-encoded strings. Processing uses standard browser encoding APIs.
Encode text for use in URLs or decode URL-encoded strings. Processing uses standard browser encoding APIs.
Use the URL Encoder/Decoder form near the top of this page. Enter the values you know, run the tool, and review the results panel. You can change inputs and run it again. Processing stays in your browser and is not uploaded to Utilnivo servers.
Example: open URL Encoder/Decoder, enter a realistic set of inputs for your situation, and note the primary result. Change one input—such as an amount, rate, or option—and compare how the output changes so you can choose a scenario that fits your needs.
Second example: try edge cases that matter for your task—such as zero values, a different unit system, or a second file—and confirm the tool shows a clear result or a helpful validation message.
Encode text for use in URLs with encodeURIComponent, or decode percent-encoded strings. Processing runs in your browser.
This tool runs in your browser for convenience. Results are estimates or transformations based on the inputs you provide and may not cover every edge case.
Encoding uses encodeURIComponent, which encodes more characters than encodeURI.