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Base64 Encoder & Decoder

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. This tool lets you encode plain text to Base64 or decode Base64 strings back to readable text, with full support for UTF-8 characters.

Tip: Base64 encoding is commonly used to encode binary data for transmission over text-based protocols. It's not encryption and should not be used for security purposes.

How to Use Base64 Encoder/Decoder

  1. 1

    Select Mode

    Choose "Encode" to convert text to Base64, or "Decode" to convert Base64 back to text.

  2. 2

    Enter Your Input

    Paste your plain text (for encoding) or Base64 string (for decoding) into the input field.

  3. 3

    Get Your Result

    Click the action button and copy your encoded/decoded result from the output field.

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode binary data like images or files for transmission over text-based protocols like email or HTTP.

Is Base64 encryption?

No, Base64 is not encryption. It's an encoding scheme that makes binary data readable as text. Anyone can decode Base64 data without a key. Never use Base64 for securing sensitive information.

Why does Base64 make data larger?

Base64 encoding increases data size by approximately 33%. This is because it uses 4 ASCII characters to represent every 3 bytes of input data. The trade-off is compatibility with text-based systems.

What are common uses for Base64?

Base64 is commonly used for embedding images in HTML/CSS, encoding email attachments, storing binary data in JSON, transmitting data in URLs, and basic data obfuscation (not security).

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