Base64 Encoder / Decoder
Encode text into Base64, or decode a Base64 string back to plain text.
Calculate
Enter your values below.
Result
Output
0
Formula used
Base64 represents binary data using 64 printable characters (A-Z, a-z, 0-9, + and /), commonly used to embed data in text formats.
Example: "Hello" encodes to "SGVsbG8=".
How to use this calculator
- Enter Input.
- Choose Direction.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What is Base64 used for?
Safely embedding binary data (like images or files) inside text-based formats such as JSON, URLs, or emails.
Is Base64 encryption?
No — it's an encoding scheme, not encryption. Anyone can decode Base64 text; it provides no security.
What happens if I try to decode invalid Base64?
The calculator shows a clear error instead of garbled output.
Does this support Unicode / special characters?
Yes, text is UTF-8 encoded before conversion, so accented letters and emoji round-trip correctly.