Tools

Base64 Encoder/Decoder

Encode text to Base64 or decode a Base64 string.

How to Calculate

Base64 is an encoding scheme that converts binary data into an ASCII string. Common use cases: • Email attachment transfer (MIME) • Data URIs (embedding images directly in HTML/CSS) • Passing API authentication tokens • Transmitting binary data over text-based protocols Base64 uses 64 characters: A-Z, a-z, 0-9, +, / and uses = for padding.

Example

Input: Hello, World! Encoded: SGVsbG8sIFdvcmxkIQ== Input: 안녕하세요 Encoded: 7JWI64WV7ZWY7IS47JqU