⏳ 3 Hour Timer

Three full hours, tracked to the second with an alarm at zero.

03:00:00

Tip: click anywhere on the page at least once so the alarm sound can play when time is up.

What is a 3 hour timer good for?

Three hours covers a long exam, a movie marathon, a slow braise, or a driving leg before your next stop. Set it once and the alarm handles the watching.

Frequently Asked Questions

Will this stay accurate for a full 3 hours?

Yes — the countdown is based on your device's clock, not elapsed ticks, so it rings exactly on time even after three hours.

Can I pause it if I get interrupted?

Yes — Pause freezes the remaining time exactly, and Start resumes from where you left off.

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