Base64 Decoder

Instantly decode Base64 encoded strings back into readable plain text. Secure, fast, and completely free developer utility.

⚠️ Invalid Base64 String. Please ensure your input is correct.

What is Base64 Encoding and Decoding?

Base64 is a generic term for a number of similar encoding schemes that encode binary data and translate it into a readable string format. A Base64 Decoder reversals this process.

How the Base64 Decoder Works

Our online Base64 Decoder uses advanced client-side JavaScript. It performs bit reversal and UTF-8 rendering safely in your browser.

The 64 Characters of Base64 Index Table

Value Range Characters Used Description
0 - 25A - ZUppercase English alphabet
26 - 51a - zLowercase English alphabet
52 - 610 - 9Numbers

Frequently Asked Questions (FAQs)

Is my decoded data stored anywhere?

Absolutely not. The decoding happens directly inside your computer's browser memory.