3:00:00
Tip: press Space to start / pause. Screen stays awake while running.
Free 3 hour timer online
A reliable 3 hour countdown for slow-cook meals, long study sessions, or timed exam practice. Tickline uses an end-timestamp so the alarm hits exactly when it should — even if you close the tab and come back later.
Frequently asked questions
How do I start a 3 hour timer?
Press Start (or Space). Tickline counts down 3 hours and plays a loud alarm when it finishes.
Does the timer stay accurate for 3 hours?
Yes. The countdown is anchored to a real end-timestamp, so background tabs, sleep-wakes, and refreshes never cause drift.
What is a 3 hour timer used for?
Slow-cooking, marathon study sessions, long focus sprints, or timed exams and practice papers.
Can I share this exact 3 hour preset?
Yes — Copy link and the URL preloads the identical timer for anyone.
Related timers
Explore Tickline
- Productivity timers
- Workout timers
- Kitchen timers
- Clocks & calculators
- Silent & visual timers
- Event countdowns
- Guides
Looking for something specific? See the full list of 128+ timers and tools.