About this Base64 Encoder & Decoder
Base64 Encoder & Decoder is useful for development, testing and data interchange when binary-safe text representation is required.
Formula or method
Text is converted to UTF-8 bytes and represented with the Base64 alphabet; decoding reverses that process.
Example
“SmartCheu” can be represented as a Base64 text string and decoded back to the original.
Common uses
- Encode short text for testing APIs.
- Decode Base64 values while debugging.
- Learn how UTF-8 text maps to Base64.
How to use this tool
- Enter the values or text requested by the calculator.
- Choose units or options when the tool provides them.
- Select the calculation button and review the result.
- Use the formula, example and notes on this page to check whether the result fits your situation.
Important note
Base64 is an encoding format, not encryption. Do not use it to hide sensitive secrets.
Frequently asked questions
Is Base64 secure encryption?
No. Anyone can decode Base64; it provides representation, not confidentiality.
Does it support Unicode text?
Yes. The tool converts text through UTF-8 bytes.