Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 to text online. Supports UTF-8. Free Base64 converter tool.
Input: 0 bytes → Output: 0 bytes
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Free Base64 Encoder and Decoder
Convert text to Base64 encoding or decode Base64 strings back to readable text. Supports full UTF-8 characters including emojis and international text.
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data as printable ASCII characters. It's commonly used in email attachments, data URLs, API authentication tokens, and embedding images in CSS/HTML.
Common Uses
- API Authentication - HTTP Basic Auth uses Base64-encoded credentials
- Data URLs - Embed small images directly in HTML/CSS
- Email - MIME encoding for attachments
- JWT Tokens - Payload is Base64URL encoded