Base64 Encoder
Convert plain text and Unicode characters into a Base64 string using your browser.
Convert UTF-8 text to Base64. Base64 is an encoding format, not encryption.
Input and output stay in this browser. Do not use Base64 as a substitute for encryption or access control.
🔒 All processing happens in your browser — files never leave your device. Your input stays in this browser and is not uploaded to Smart Online Tools.
How it works
- Enter the text.
- Select Encode to Base64.
- Copy the encoded output.
Good to know: Base64 is reversible encoding, not encryption or a way to protect secret values.
Privacy and processing
All processing happens in your browser — files never leave your device. Your input stays in this browser and is not uploaded to Smart Online Tools.
What Base64 encoding does
Base64 represents bytes using a text-safe alphabet. It is often used when a protocol or data format needs to carry binary or UTF-8 content in a text field.
Anyone can decode Base64 without a key. It does not provide confidentiality, password protection, or tamper detection. Use established encryption and authentication mechanisms for sensitive data.
Frequently asked questions
What does Base64 Encoder do?
Encode UTF-8 text as Base64. Convert plain text and Unicode characters into a Base64 string using your browser.
Does this tool upload my files or input?
Your input stays in this browser and is not uploaded to Smart Online Tools.
What should I know before using this tool?
Base64 is reversible encoding, not encryption or a way to protect secret values.