Text & encoding
Base64 to Binary
Convert Base64-encoded bytes into eight-bit binary groups. Nothing you enter leaves your browser.
Your result will appear here.
What this tool does
About the Base64 to Binary
This converter reads Base64 input and rewrites the same usable information as binary. It changes the representation, not the meaning of the source data, except where the target format cannot express the same structure.
It is useful for preparing text for another system, inspecting an encoded value, or applying a repeatable cleanup step.
How to use it
- Paste Base64 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 “Convert to binary.”
- 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: Rm9ybWF0Q2FsYw== Select “Convert to binary” 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.
- Binary output is a base-2 representation. Spaces may be used only to make byte groups easier to read.
- Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.
Common questions
Using the Base64 to Binary
Is the Base64 to Binary free to use?
Yes. FormatCalc's Base64 to Binary is free to use with no account required.
Is my data private when I use the Base64 to Binary?
Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.
How do I use the Base64 to Binary?
Paste or type your input, select any available options, and choose Convert to binary. 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. Binary output is a base-2 representation. Spaces may be used only to make byte groups easier to read. Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.