Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 to text instantly. Secure, fast, and works fully offline in your browser.

Input Text

1

Base64 Output

1

Free Online Base64 Encoder & Decoder Tool

The most advanced Base64 encoder and Base64 decoder online. Encode text to Base64 or decode Base64 strings instantly. Perfect for developers, data processing, and secure text transmission.

🔐
Base64 Encode
Encode text to Base64 format securely
🔓
Base64 Decode
Decode Base64 back to original text
⚡
Instant Processing
Real-time encoding and decoding
🔒
Privacy Focused
Works completely in your browser

🚀 How to Use Base64 Encoder & Decoder

🔐 Base64 Encoding

  • 1.Select Encode mode
  • 2.Enter text to encode in the input area
  • 3.Click "Encode to Base64"
  • 4.Copy the Base64 encoded result

🔓 Base64 Decoding

  • 1.Select Decode mode
  • 2.Paste Base64 string to decode
  • 3.Click "Decode from Base64"
  • 4.Get the original decoded text instantly

💼 Base64 Encoder Use Cases

🌐 Web Development

  • • Data URI schemes
  • • Image embedding in HTML/CSS
  • • API data transmission
  • • Cookie value encoding

📧 Email & Communication

  • • MIME email attachments
  • • SMTP protocol data
  • • Binary file transfer
  • • Email header encoding

🔐 Security & Authentication

  • • Basic HTTP authentication
  • • JWT token encoding
  • • Credential storage
  • • Data obfuscation

⚡ Base64 Technical Details

🔧 How Base64 Works

Base64 encoding converts binary data into ASCII characters using 64 different characters: A-Z, a-z, 0-9, +, and /. Each character represents 6 bits of data, with = used for padding.

Character Set: A-Z, a-z, 0-9, +, /, = (padding)

🔍 Encoding Process

Text is converted to binary, then grouped into 6-bit chunks. Each chunk is mapped to a Base64 character. The output is approximately 33% larger than the original input.

Size Increase: ~33% larger than original

🌟 Why Choose Our Base64 Tool?

⚡

Instant Processing

Encode/decode in milliseconds

🔒

Privacy First

No data leaves your browser

🌐

Unicode Support

Handles all text characters

🎯

Developer Friendly

Built for developers by developers

🔗 Related Developer Tools

🔧

JSON Formatter

Format and validate JSON data

🆔

UUID Generator

Generate unique identifiers

📐

PX to REM Converter

Typography unit conversion

🎨

Color Converter

Convert color formats

Ready to Encode or Decode Base64?

Join thousands of developers who trust our encoding tools

No sign up required • 100% Free • Works offline • Privacy focused

🔍 Popular Base64 Tools & Keywords

Base64 Encoder • Base64 Decoder • Base64 Encode •Base64 Decode • Base64 Online • Encode Base64 •Decode Base64 • Base64 Converter • Base64 Tool •Base64 String • Base64 to Text • Text to Base64 •Base64 Encoding • Base64 Decoding • Online Base64 •Base64 Generator • Base64 Parser • Base64 Utility