EVERYDAY
UTF-8 Base64 Text Calculator
Encode and decode small text locally.
Your result
EVERYDAYEnter your values and select calculate.
On this page How it works & practical examples
How to use the UTF-8 Base64 Text Calculator
Encode and decode small text locally. Input is limited to 10,000 characters, and decoder validation rejects malformed Base64 or bytes that are not valid UTF-8.
The calculation
Encode UTF-8 bytes in four-character Base64 groups; reverse only valid UTF-8 text
Worked example
Hello encodes to SGVsbG8=; Chinese and emoji text are encoded as UTF-8 rather than Latin-1.
Assumptions and limits
Encoding is not encryption. This text tool does not process binary uploads or URL-safe Base64 variants; no text is sent to a server.
Common questions
Which inputs should I use?
Encode and decode small text locally. Input is limited to 10,000 characters, and decoder validation rejects malformed Base64 or bytes that are not valid UTF-8.
What does the result exclude?
Encoding is not encryption. This text tool does not process binary uploads or URL-safe Base64 variants; no text is sent to a server.