Encode Unicode text to Base64 format with full UTF-8 support. Preview characters and analyze encoding details.
Encode Unicode text to Base64 with UTF-8 encoding support
When converting Unicode text to Base64, the process involves two steps: first, the Unicode text is encoded to UTF-8 bytes, then those bytes are encoded to Base64. This ensures that any Unicode character can be safely transmitted through text-only systems.
UTF-8 is a variable-width encoding that uses 1-4 bytes per character. ASCII characters use 1 byte, while many international characters and emojis require multiple bytes, which affects the final Base64 output size.
A → U+0041 → 0x41 (1 byte)$ → U+0024 → 0x24 (1 byte)~ → U+007E → 0x7E (1 byte)é → U+00E9 → 0xC3 0xA9 (2 bytes)你 → U+4F60 → 0xE4 0xBD 0xA0 (3 bytes)🌍 → U+1F30D → 0xF0 0x9F 0x8C 0x8D (4 bytes)Safely transmit Unicode text through systems that only support ASCII
Encode international text for JSON payloads and HTTP requests
Store Unicode text in systems with limited character support
Convert text files with special characters to Base64 format
Base64 encodes 6 bits of data per character, while UTF-8 uses 8 bits per byte. This results in approximately 33% size increase, plus any additional overhead from multi-byte UTF-8 encoding.
Yes! This tool supports the full Unicode range including emojis, CJK characters, and special symbols. All characters are first converted to UTF-8 bytes before Base64 encoding.
ASCII only supports 128 basic characters (English letters, numbers, symbols). Unicode supports over 140,000 characters from all writing systems, making it truly universal.
Absolutely! This Unicode to Base64 converter is completely free with no limitations, registration, or hidden costs.