TOTP Authenticator
Generate 2FA TOTP codes from any base32 secret with a live countdown and multiple saved accounts.
otpauth://totp/OpenWork%3Auser%40example.com?secret=JBSWY3DPEHPK3PXP&issuer=OpenWork&period=30&digits=6&algorithm=SHA-1
RFC 6238 TOTP over HMAC-SHA (RFC 4226 HOTP). Codes are computed locally with Web Crypto — your secret never leaves this page.
About TOTP Authenticator
Generate 2FA TOTP codes from any base32 secret with a live countdown and multiple saved accounts.
TOTP Authenticator does the security work in your browser using well-known algorithms, so sensitive input never has to be sent to a remote server.
How to Use TOTP Authenticator
- Enter the secret text, file or value you want to process.
- Choose the algorithm, key or options required.
- Run the operation — the output appears instantly and locally.
- Copy the result safely.
Key Features
- Encryption and hashing run locally — your secrets stay on your device.
- Uses established, well-documented algorithms and standards.
- No account, no key storage, no data retention.
Frequently Asked Questions
Is TOTP Authenticator safe to use with sensitive data?
Yes. TOTP Authenticator runs entirely inside your browser using in-page cryptography, so your inputs are never uploaded, logged or shared.
Is TOTP Authenticator free to use?
Yes. TOTP Authenticator is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. TOTP Authenticator runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does TOTP Authenticator work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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