How do I convert HH:MM:SS to seconds?

Multiply hours by 3600, minutes by 60, and add the seconds. Example: 01:30:45 = 3600 + 1800 + 45 = 5,445 seconds.

How do I convert HH:MM:SS to minutes?

Multiply hours by 60, add minutes, then add seconds divided by 60. Example: 01:30:45 = 60 + 30 + 0.75 = 90.75 minutes.

Does this run offline?

Yes. The conversion runs entirely in your browser with plain JavaScript. Nothing is sent to a server.

HiveCode. Same team behind a few other small tools at hivecode.cloud.

Privacy Policy

Last updated: June 2026.

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HiveCode

This site, hhmmss.hivecode.cloud, is operated by HiveCode. Contact: hivecode.cloud.

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Data we process

The converter itself runs entirely in your browser. We do not store the durations you type, we do not have user accounts, and we do not collect personal data on our servers.

The site is served as static files. We may receive standard web server logs (IP address, user agent, timestamp) from the hosting provider for security and diagnostics. These logs are retained for a short period and never sold.

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Changes

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We may update this policy occasionally. The date at the top of this page reflects the most recent revision. Material changes will be summarized here.