Base64 Encoder / Decoder

Encode text into Base64 format or decode existing Base64 strings. All processing happens locally for maximum security.

100% Secure. Processed locally.
Uses standard UTF-8 encoding for reliable multi-language support.

How to use the Base64 Encoder/Decoder

1

Input Data

Type or paste your text or Base64 string into the input area.

2

Select Method

Click "Encode" to convert text to Base64, or "Decode" for the reverse process.

3

Instant Result

The result is displayed immediately. Copy it to your clipboard with one click.

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to embed images in HTML, transmit binary data over text-based protocols like email (MIME), or store complex data in a simple text format.

Aa
Uses 64 unique characters
==
Pads results with '=' if needed
SGVsbG8gV29ybGQh
("Hello World!" in Base64)

Why Use WebUtilityKit?

UTF-8 Support

We handle multi-byte characters (emojis, foreign languages) correctly using modern browser standards.

Secure & Private

Everything is processed on your device. No data is ever uploaded or stored on any server.

Base64 Converter FAQ

Is Base64 a form of encryption?
No, Base64 is not encryption. It is an encoding scheme. Anyone can easily decode a Base64 string back to its original form. It should never be used for security or hiding data.
Does it support non-English characters?
Yes. Our tool uses UTF-8 encoding before converting to Base64, ensuring that all international characters and emojis are preserved correctly.