Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 back to text with our simple online tool

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Encode & Decode

Convert text to Base64 encoding and decode Base64 back to original text

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Instant Results

Get your Base64 encoding/decoding immediately with client-side processing

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1-Click Copy

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🔒 Client-Side Processing
All encoding/decoding is done in your browser using JavaScript. Your data never leaves your device, ensuring maximum privacy and security.

Encode to Base64

Decode from Base64

Enter text to encode

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💡 For developers: Encode/decode Base64 with:

echo -n "text" | base64

# Encode text to Base64

echo -n "dGV4dA==" | base64 -d

# Decode Base64 to text

base64 filename.txt

# Encode file content to Base64

About Base64 Encoding

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation. It is commonly used to encode data that needs to be stored and transferred over media that are designed to deal with text.

Base64 Encoding Characteristics

• Uses 64 different ASCII characters (A-Z, a-z, 0-9, +, /)
• Encoded data is approximately 33% larger than the original binary data
• Commonly padded with "=" characters to make the length a multiple of 4
• Not an encryption method - does not provide security or confidentiality

Common Uses of Base64

Base64 encoding is widely used in various applications and protocols:

Application	Usage
Email (MIME)	Encoding email attachments for transmission via SMTP
Web Development	Embedding images and other binary data directly in HTML/CSS (Data URLs)
JSON APIs	Transmitting binary data in JSON format, which only supports text
Basic Authentication	Encoding username and password in HTTP headers

ℹ️ Note: Base64 is an encoding scheme, not encryption. It does not provide security or confidentiality for your data. For secure transmission of sensitive data, use encryption (like TLS/SSL) in addition to Base64 encoding.

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