Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, with full UTF-8 support.
Base64 represents bytes using 64 printable characters. Text is converted to UTF-8 bytes first so emoji and non-Latin scripts survive the round trip.
Results are estimates for planning and learning. Check important numbers against your own data and a qualified professional. Everything is calculated in your browser; nothing you enter is sent anywhere.