Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to plain text — entirely in your browser.
Frequently Asked Questions
-
No. Base64 is encoding, not encryption. Anyone can decode it without a key. Never use it to secure sensitive data.
-
Base64 represents every 3 bytes as 4 ASCII characters, increasing data size by approximately 33%.
-
The = characters are padding added when the input length is not divisible by 3.
-
Yes, completely free.