Base32 encoder and decoder
Authenticator apps store TOTP keys as RFC 4648 Base32. Convert text to Base32 or decode a secret to hex.
Related 2FA tools
TOTP generator
Live 6-digit 2FA codes from a Base32 secret, with optional device-saved accounts.
TOTP verifier
Check whether a code matches a secret within a clock-drift window.
Secret generator
Create a random Base32 TOTP secret for new 2FA enrollments.
otpauth URI builder
Build a standard otpauth://totp URI for authenticator apps.
Online authenticator
How an online TOTP tool compares with Google Authenticator.