fiokit.

Base64 Encoder & Decoder

Convert text to Base64 and back in one workspace. Choose a direction, swap the result into the input, then copy or download.

Hover over or focus a field for help. Press Escape to close.

Up to 200,000 characters. Processed locally.
0 UTF-16 units
0Words
0Characters
0Without spaces
0Lines

How it works

Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.

A practical example

Your text

Ciao

Result

Q2lhbw==

Frequently asked questions

Does Base64 encrypt my text?

No. Base64 represents data using a different set of characters; it does not use a secret key. Anyone with the encoded text can decode it. Use the direction control to encode or decode UTF-8 text in the same tool.

Is my input sent to a server?

No. Your content is processed in this browser. It is never sent to the server or saved.

What should I know about Base64 Encoder & Decoder?

Uses UTF-8 text. Invalid byte sequences are rejected. Binary input uses eight-bit groups; hex input accepts byte pairs with optional spaces. Base64 uses the standard alphabet and padding.