Free online tool
Base64 Encoder / Decoder
Encode UTF-8 text to Base64 or decode Base64 back to text.
Input and conversion stay in your browser.
Result
No result yet. Enter a value and choose a conversion.
How to use
- Enter plain text and select Encode Base64.
- To restore Base64, enter the value and select Decode Base64.
- If an error appears, check the allowed characters and trailing = padding.
- Copy the result or reset the input and output.
Example
UTF-8 text
Hello π
Base64 result
SGVsbG8g8J+Riw==
Frequently asked questions
Can it convert Korean text and emoji?
Yes. Text is converted as UTF-8 bytes, so international characters and emoji are preserved.
Is my input sent to a server?
No. All processing happens only in your current browser.
Is Base64 encryption?
No. It is an encoding format that anyone can decode.