Encode and decode Base64 strings instantly. No waiting, no page reloads.
Fully supports UTF-8 characters, including emojis and non-Latin scripts.
All conversions happen locally in your browser. Your data never leaves your device.
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is designed to carry data stored in binary formats across channels that only reliably support text content.
Base64 is commonly used in:
No, Base64 is an encoding scheme, not encryption. It does not secure data; it simply changes its representation. Anyone can decode Base64 back to the original data.
Currently, this tool is optimized for text strings. For images, you would typically need a file-to-Base64 converter.
The equals sign (=) is used as padding in Base64. Base64 encodes data in groups of 3 bytes (24 bits) into 4 characters. If the input data isn't a multiple of 3 bytes, padding is added to make the output a multiple of 4 characters.
No! Base64 encoding is not secure for storing passwords. Use proper hashing algorithms like bcrypt, Argon2, or PBKDF2 for password storage. Base64 is easily reversible and provides no security.
Standard Base64 uses 64 characters: A-Z (uppercase), a-z (lowercase), 0-9 (digits), + (plus), and / (slash). The character = is used for padding. There are also URL-safe variants that replace + and / with - and _.