Base64 Encoder & Decoder

Convert text to Base64 and Base64 back to normal text. Useful for developers, debugging and quick encoding.

Input

Output

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that converts binary data into a string of ASCII characters. It is commonly used to embed image data in HTML or CSS (data URLs), encode email attachments (MIME), and transmit binary data safely through text-based protocols like JSON APIs. Base64 is not encryption -- it is a reversible encoding method that makes binary data safe for text channels, but it does not provide any security or confidentiality.

How to Use

Enter your plain text or Base64 string into the input area.
Click "Encode to Base64" to convert plain text into Base64, or "Decode from Base64" to convert a Base64 string back to plain text.
The result appears in the output area. Click "Copy output" to copy it to your clipboard.

Frequently Asked Questions

Is Base64 the same as encryption?

No. Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string back to its original form. It provides no security or confidentiality. If you need to protect data, use proper encryption methods.

Why does Base64 make data larger?

Base64 encoding increases data size by approximately 33% because it represents every 3 bytes of binary data using 4 ASCII characters. This trade-off is acceptable when you need to embed binary data in text-based formats.