What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters (A-Z, a-z, 0-9, +, /). It increases data size by about 33%.

Is Base64 encryption?

No. Base64 is encoding, not encryption. It is easily reversible and provides no security. Never use it to protect sensitive data.

Can I encode/decode files?

The tool works with text strings. For file encoding (images, PDFs), the binary data would need to be read as text first.

Does it handle UTF-8 characters?

Yes. The tool properly handles UTF-8 encoded text including international characters, emojis, and special symbols.

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings instantly. Free online Base64 converter.

base64encodedecodeconverter

Common Use Cases

debugging small payloads and snippets
formatting code or data for readability
running fast checks without a full project setup

What is Base64 Encode/Decode?

The Base64 Encode/Decode tool converts plain text to Base64 encoding and vice versa. Base64 is commonly used for encoding binary data in text-based formats like JSON, XML, HTML, and email attachments. Developers frequently use it for embedding images in CSS, encoding API authentication tokens, and transmitting data through text-only channels.

How to Use This Tool

1Enter text or Base64 string in the input
2Click Encode to convert to Base64 or Decode to convert back
3Copy the result from the output area

Example

Input

Hello World!

Output

SGVsbG8gV29ybGQh

Before You Rely on This Result

UtilityNest keeps this tool simple on purpose: the goal is to make the task easy to understand, fast to complete, and straightforward to double-check.

Review the inputs once more before you copy, save, or share the result.
Use the example and FAQ on this page to sense-check how the tool behaves.
When the result matters, compare one more scenario or related tool before acting on it.

Frequently Asked Questions

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