Text & encoding
Base64 to File
Turn a Base64 string into a downloadable file locally. Nothing you enter leaves your browser.
You can paste a Base64 data URL or a raw Base64 string.
Your result will appear here.
What this tool does
About the Base64 to File
This converter transforms supported Base64 input into file. Review the supported scope below, especially when the target format cannot represent all source features.
It is useful for preparing text for another system, inspecting an encoded value, or applying a repeatable cleanup step.
How to use it
- Paste the requested paste base64 or choose the source file shown in the workbench.
- Review any output settings shown beside the file control. Then select “Prepare file.”
- Inspect the result. Download the new file when available, or copy the text result. Keep the original until you have verified the converted copy.
Practical example
Start with a known input
Try this sample input: SGVsbG8sIEZvcm1hdENhbGMh Select “Prepare file” and compare the result with the source before using it elsewhere.
What to know about the result
- Text whitespace is preserved. Base64 may omit padding, but supplied padding and unused bits must be canonical.
- Base64 is an encoding, not encryption. It makes binary or text data easier to transport in text systems but increases the encoded size.
- Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.
Common questions
Using the Base64 to File
Is the Base64 to File free to use?
Yes. FormatCalc's Base64 to File is free to use with no account required.
Is my data private when I use the Base64 to File?
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 File?
Choose or paste your file data, then choose Prepare file. The conversion stays on your device.
What should I check before using the result?
Text whitespace is preserved. Base64 may omit padding, but supplied padding and unused bits must be canonical. Base64 is an encoding, not encryption. It makes binary or text data easier to transport in text systems but increases the encoded size. Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.