How TOTP works
The secret and current 30-second window are combined using HMAC-SHA-1. The service performs the same calculation and compares the result.
Security utility
Time-based 2FA Codes
Generate a standard six-digit TOTP code from a Base32 secret. The secret is processed locally and is never submitted to Vishow.
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No advertisements or third-party scripts
Only first-party code runs here. Close the tab to clear the entered secret.
Spaces and hyphens are ignored. RFC 6238: SHA-1, 30 seconds, six digits.
Current code— — — — — —
Enter a secret to begin