Quick answer
Three hours is the famous sub-three marathon goal (about 4:16 per kilometer or 6:52 per mile), the length of many final exams and workshops, and a typical time for a braise or a slow cooker on high. Playxoft's free 3 hour timer is already set: press Start or the Space key and it sounds an alarm at zero. Long runs stay exact because it works from the finish time.
- Set to 3 hours
- Alarm rings in background tabs
- Multiple timers
- Six alarm sounds
- Fullscreen focus mode
How to use this 3 hour timer
- 1The timer is already set to 3 hours. Press Start or the Space key to begin.
- 2Optional: name it (for example "Slow cook"), pick an alarm Sound, and turn on Repeat to run it again automatically.
- 3While it runs, use +1 min or the quick chips to adjust, and Focus mode for fullscreen digits.
- 4When the alarm rings, press Dismiss, or Snooze 5 min for more time.
What can you time with a 3 hour timer?
- Long exams. Many final exams and professional tests run for up to three hours.
- Slow cooking. Braises, stews and slow-roasted meats often cook for around three hours, and a slow cooker on high often needs 3 to 4 hours.
- Workshops and long sessions. A three-hour workshop or rehearsal with a visible countdown keeps the schedule honest.
- Marathon goals. Finishing in under three hours is a well-known target for amateur marathon runners.
- Long hikes and rides. Set a turnaround alarm at the halfway point of a six-hour day.
What pace is a sub-3-hour marathon?
A marathon is 42.195 kilometers (26.2 miles). Finishing in under three hours means averaging about:
| Unit | Pace |
|---|---|
| Per kilometer | 4:16 |
| Per mile | 6:52 |
| Speed | 14.1 km/h (8.7 mph) |
For pacing on a long run, use this 3 hour timer as the overall limit and add a repeating checkpoint timer, for example every 30 minutes, to check your splits. The stopwatch records lap times if you prefer to track each kilometer or mile.
Tips for using a 3 hour timer
- Add a 1 hour or 90 minute checkpoint timer with Repeat on.
- Keep the device plugged in and awake; a sleeping computer cannot play the alarm.
- The end time under the digits tells you exactly when the three hours are up.
- Need longer still? Type any length up to 99 hours, for example
3h 30m.
How many seconds is 3 hours?
3 hours is 10,800 seconds, or 180 minutes.
| Measure | Value |
|---|---|
| Seconds | 10,800 |
| Minutes | 180 |
| Hours | 3 |
| Back to back in one day | 8 |
It ends exactly 3 hours after you press Start, and the end time appears under the digits so you can plan around it.
Need a different length?
- Shorter: 2 hour timer, 90 minute timer
- Any length: the online timer takes whatever you type, for example
3h 30m. - Focus sessions with breaks: the Pomodoro timer.
- Work and rest rounds: the interval timer.
- Counting up with laps: the stopwatch.
Frequently asked questions
Last updated by the Playxoft engineering team.