Base64 Encode & Decode

Convert text to Base64 encoding or decode Base64 back to text. Supports UTF-8.

What is Base64?

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It's commonly used for encoding data in URLs, email attachments, and embedding images in HTML/CSS.

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Base64 Encode/Decode — Convert Text Online Free

Free online Base64 encoder/decoder for converting between text and Base64 format instantly. Supports UTF-8 including Chinese characters.

How to Use

  1. Enter text or Base64 in either input field.
  2. Click Encode or Decode to convert.
  3. Copy result with one click.

Features

  • UTF-8 support (Chinese, Japanese, Korean)
  • URL-safe Base64 option
  • Batch processing
  • 100% client-side

Use Cases

  • Embedding images in JSON/CSS
  • HTTP Basic Auth headers
  • Safe URL parameters

FAQ

What is Base64?

Base64 is a binary-to-text encoding scheme used to represent binary data as ASCII characters.