Base32 Encode / Decode

About this calculator

This tool encodes arbitrary text into Base32, a scheme that represents binary data using only 32 characters (A–Z and digits 2–7), or decodes a Base32 string back into the original text. Compared to Base64, Base32 uses a smaller, case-insensitive alphabet that avoids visually confusing characters, which makes it more forgiving when it needs to be read aloud, typed by hand, or used somewhere that isn't reliably case-sensitive.

It's most commonly recognized as the format behind two-factor authentication secret keys (the string you type in manually if you can't scan the QR code for Google Authenticator or similar apps) and is also used in some DNS record encodings and file-naming schemes where a compact, unambiguous, alphanumeric-only representation of binary data is needed.