Base64 Encoder — Free Online Tool
Encode any text to Base64 with full Unicode and emoji support.
About Base64 Encoder
The Base64 Encoder converts plain text into a Base64 string directly in your browser. Base64 is widely used to embed data in URLs, JSON payloads, data URIs, and email attachments, making this tool a quick helper for developers working with APIs and web apps.
The encoder handles full Unicode by converting your text to UTF-8 first, so emoji and international characters encode reliably. Because all work happens locally, your input is never uploaded, keeping even sensitive text private.
How to Use Base64 Encoder
- Type or paste the text you want to encode into the input box.
- Click 'Encode' to convert the text into a Base64 string.
- Review the Base64 output in the result box.
- Use 'Copy Result' to copy the encoded string to your clipboard.
Key Features
Encode any text to Base64 instantly
Full Unicode and emoji support via UTF-8 encoding
100% client-side - your text never leaves the browser
One-click copy of the encoded output
No signup, no limits, and no watermarks
Frequently Asked Questions
What is Base64 encoding used for?
Base64 represents binary or text data as ASCII characters, making it safe to embed in URLs, JSON, emails, and data URIs. It is commonly used to transmit data that might otherwise be corrupted by text-only channels.
Does this encoder support Unicode and emoji?
Yes. The tool encodes text as UTF-8 before converting to Base64, so accented characters, non-Latin scripts, and emoji all encode and decode correctly.
Is Base64 a form of encryption?
No. Base64 is encoding, not encryption. Anyone can decode it back to the original text, so it should never be used to protect passwords or secrets.
Is my text sent to a server?
No. Encoding runs entirely in your browser, so your text never leaves your device and stays completely private.