Base64 Encoder / Decoder
Encode text to Base64 or decode it back, UTF-8 safe.
About this tool
The Base64 Encoder / Decoder converts text to Base64 and back with full UTF-8 support, so accented characters, non-Latin scripts and emoji survive the round trip intact — something many naive converters get wrong.
Base64 represents binary data using 64 safe ASCII characters. It's everywhere in web development: data URIs, basic HTTP authentication, JSON web tokens, email attachments and API payloads that must pass through text-only channels.
Frequently asked questions
No — it's an encoding, not encryption. Anyone can decode it. Never use Base64 alone to protect secrets.
Base64 stores 3 bytes of data in 4 characters, so encoded text is roughly a third longer than the original.
Equals signs pad the output so its length is a multiple of 4. They're part of the standard and required by strict decoders.