Base64 Encoder/Decoder
Convert text to Base64 encoding or decode Base64 back to text. A useful tool for developers working with data encoding.
Input
0 characters
Result
About Base64 Encoding
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation.
Base64 encoding is commonly used when binary data needs to be stored or transferred as text. Common use cases include:
- Email Attachments: MIME format uses Base64 to encode binary attachments.
- Data URIs: Embedding images or other binary data directly in HTML or CSS.
- API Communication: Sending binary data in JSON payloads.
- Storing Binary Data: When binary data needs to be stored in text-based storage systems.
- Avoiding Special Character Issues: When data might contain characters that could be problematic in certain contexts.
Base64 encoding works by:
- Taking 3 bytes (24 bits) of binary data
- Dividing those 24 bits into 4 groups of 6 bits each
- Converting each 6-bit value (0-63) to a character from the Base64 alphabet
The standard Base64 alphabet consists of:
- A-Z (26 characters)
- a-z (26 characters)
- 0-9 (10 characters)
- + and / (2 characters)
When the input length is not divisible by 3, padding with = characters is used.
URL-safe Base64 replaces + with - and / with _ to avoid issues with URL encoding.
Your Privacy: All processing happens locally in your browser. Your text and files are never sent to any server.