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Base64 Encoder

Encode and decode Base64 strings online. Convert text to Base64 and decode Base64 back to text with our free, secure tool.

Instant Conversion

Encode and decode in real-time

Secure Processing

All processing done locally

Bidirectional

Encode and decode both ways

Plain Text
Enter text to encode to Base64
Base64 Encoded
Base64 encoded result
About Base64 Encoding

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format by translating it into a radix-64 representation using 64 printable characters.

Common Use Cases:

  • • Email attachments (MIME)
  • • Embedding images in HTML/CSS
  • • API data transmission
  • • Storing binary data in text format
  • • URL-safe data encoding

Character Set:

A-Z, a-z, 0-9, +, / (and = for padding)

Important Notes:

  • • Base64 increases size by ~33%
  • • Not suitable for encryption
  • • Case-sensitive encoding
  • • Padding with = characters
  • • No line breaks in standard Base64
Security Note: Base64 is encoding, not encryption. Don't use it for sensitive data protection.
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