Base64 Encoder & Decoder
Encode text and files to Base64 or decode Base64 data with full UTF-8 character support.
Client-side calculations and instant parameter controls are initializing. All processing occurs securely in your browser.
How to Use the Base64 Encoder & Decoder
- 1 Select Encode mode to convert plain text to Base64, or Decode mode to read Base64 strings.
- 2 Type or paste your text, or upload a file to convert it to a Base64 Data URI.
- 3 Copy the encoded or decoded output with one click.
Mathematical Formula & Principle
Base64 Encoding = 6-bit Binary to Radix-64 ASCII Translation
Calculations are performed with IEEE floating point mathematical precision directly in your device memory.
Worked Examples
Text Encoding
Translates 8-bit bytes into 6-bit printable ASCII characters.
Frequently Asked Questions
- Does this converter support special UTF-8 characters and emojis?
- Yes! Our implementation properly handles multi-byte UTF-8 character encodings.
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