Free online Base64 encoder and decoder. Convert text to Base64 and back, UTF-8 safe, instantly in your browser.
Encode any text to Base64 or decode a Base64 string back to plain text. The conversion is UTF-8 safe, so emoji and accented characters round-trip correctly, and it all runs locally in your browser — nothing is uploaded.
Base64 represents binary data as ASCII text so it can travel safely through systems built for text — data URLs, JSON payloads, email attachments (MIME) and HTTP headers. It is encoding, not encryption: anyone can decode it.
No. Base64 is reversible and provides zero confidentiality. Use a real hash (bcrypt/argon2) for passwords and TLS for transport.