Text & encoding

File to Base64

Convert a small local file to Base64 without uploading it. Nothing you enter leaves your browser.

Choose a file

Files up to 5 MB are converted locally. No upload is made.

Result

Your result will appear here.

Simple by design

Get the answer, without the clutter.

FormatCalc is built for quick work. This file to base64 runs entirely on your device, so private text and data stay private.

01

Choose a file or paste its Base64 data.

02

Transform it with one click.

03

Copy, use, or download your result.

Common questions

Using the File to Base64

Is the File to Base64 free to use?

Yes. FormatCalc's File to Base64 is free to use with no account required.

Is my data private when I use the File to Base64?

Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.

How do I use the File to Base64?

Choose or paste your file data, then choose Convert file. The conversion stays on your device.