A LITTLE HELP FOR YOUR NEXT TASK
HOTP Counter Code Generator
Generate counter-based one-time codes from a Base32 secret.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
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How to use HOTP Counter Code Generator
- Enter a Base32 secret and an unsigned counter.
- Choose six or eight digits and generate the current code.
- Advance the counter explicitly when your service expects it.
What are the limits of HOTP Counter Code Generator?
RFC 4226 HMAC-SHA1. No account synchronization, secret backup or automatic counter advancement. Server and client counters must stay aligned. This tool processes inputs in browser memory and makes no upload or lookup request. Clear inputs or close the tab when finished. Exports and clipboard actions are explicit.