Text & encoding
Base64URL to Text
Decode URL-safe Base64 into UTF-8 text. Nothing you enter leaves your browser.
Your result will appear here.
What this tool does
About the Base64URL to Text
Decode URL-safe Base64 into UTF-8 text. It is useful for preparing text for another system, inspecting an encoded value, or applying a repeatable cleanup step.
It is useful for preparing text for another system, inspecting an encoded value, or applying a repeatable cleanup step.
How to use it
- Paste Base64URL in the input pane. Use the example button if you want to see the expected syntax.
- Review the input for the structure shown in the example. Then select “Decode Base64URL.”
- Inspect the result for warnings or structural differences, then copy it into the destination system.
Practical example
Start with a known input
Try this sample input: SGVsbG8_IHByaXZhdGU9eWVz Select “Decode Base64URL” and compare the result with the source before using it elsewhere.
What to know about the result
- Base64 is an encoding, not encryption. It makes binary or text data easier to transport in text systems but increases the encoded size.
- URL encoding replaces reserved or unsafe characters with percent-encoded bytes so values can travel safely in a URL component.
- Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.
Common questions
Using the Base64URL to Text
Is the Base64URL to Text free to use?
Yes. FormatCalc's Base64URL to Text is free to use with no account required.
Is my data private when I use the Base64URL to Text?
Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.
How do I use the Base64URL to Text?
Paste or type your input, select any available options, and choose Decode Base64URL. You can then copy the result.
What should I check before using the result?
Base64 is an encoding, not encryption. It makes binary or text data easier to transport in text systems but increases the encoded size. URL encoding replaces reserved or unsafe characters with percent-encoded bytes so values can travel safely in a URL component. Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.