Base64 Encoder & Decoder Online
Encode text as Base64 or decode a valid Base64 value. Base64 is an encoding, not encryption, and does not protect sensitive data.
This tool processes its main input in your browser and does not send it to an external API. Fonts and interface assets may load from external providers.
Base64 Encoder & Decoder Online
Base64 represents binary data as printable ASCII characters. It appears in email bodies, data URLs and text-oriented protocols, but it provides no confidentiality or access control.
Character encoding matters when turning decoded bytes back into text. Compare the result with the source before using it in another application.
How to use it
- Choose whether to encode text or decode a Base64 value.
- Enter the value and run the selected operation.
- Copy the output and check the target protocol's character and size requirements.
Example
Input: Hello, Yula!
Output: SGVsbG8sIFl1bGEh
Who is it for?
- Web and API developers
- Students learning data encoding
- Teams inspecting payloads
Privacy and limitations
Conversion runs in your browser and the tool does not send input to an external API. Base64 output is public data that anyone can decode.
Base64 Encoding and Decoding: What It Does and When to Use It
Frequently asked questions
Is Base64 encryption?
No. It is an encoding format with no key or access control; anyone can reverse it.
Why does Base64 sometimes end with an equals sign?
The equals sign can be used as padding. It is not required for every encoded value.
Can Unicode text decode incorrectly?
Yes, if bytes are interpreted with the wrong character encoding. Compare the decoded text with the original source.
Can I encode a password or token?
You can, but encoding does not protect it. Do not share credentials on the assumption that Base64 hides them.