Base64 Encoder & Decoder - Free Online Tool

Decoded Text

Auto-save: ON

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Encoding:

Decode each line separately

File:

Base64 Variant:

Encoded (Base64)

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Why Use Our Base64 Encoder & Decoder?

🔒 Privacy First

All encoding and decoding is done locally in your browser. Your data never leaves your device.

⚡ Fast & Versatile

Supports UTF-8, ASCII, UTF-16, Latin-1, and popular Base64 variants (Standard, URL, MIME).

🔄 Bi-directional

Encode or decode text instantly. Switch between modes with a single click.

📋 Easy Copy

Copy output to clipboard with one click. Perfect for developers, sysadmins, and writers.

💾 Auto-Save

Optional auto-save to local storage. Never lose your work, or disable for privacy.

How to Use

Paste or type your text in the input panel.
Select the desired encoding and Base64 variant.
Click "Encode" or "Decode" as needed.
Copy the result or clear all fields.