The free online 688 second timer on FinalTimer.com counts down 11 minutes and 28 seconds without an app and without an account. Set it, start it and get back to what matters.
Practical Uses for a 688 Second Timer
People use a 688 second timer for very different tasks, for example:
- Flashcard Session: Review vocabulary or exam cards for 11 minutes and 28 seconds. Short, regular sessions beat long cramming.
- Journaling: Write freely for 11 minutes and 28 seconds: a short journaling session clears your head and sharpens your priorities.
- Brainstorming Round: Collect ideas in a team without discussing them. A fixed 688-second round keeps the energy high.
- Cooking Pasta: Most dried pasta needs 8 to 12 minutes. Set the 688 second timer and drain it right on time for perfect al dente results.
- Baking Cookies: Many cookie and muffin recipes bake for 10 to 25 minutes, and the 688 second timer makes sure nothing burns.
Fun Fact About 688 Seconds
The Bitcoin network is designed to produce a new block roughly every ten minutes. Your 688 second timer runs 1 minute and 28 seconds longer.
Broken down into prime factors, 688 = 2⁴ × 43.
How to Use the 688 Second Timer
- The timer at the top of this page is already set to 11:28. Simply press Start Timer.
- Optionally add a label, enable the alarm and choose one of 13 alarm sounds (use the speaker button to preview them).
- Turn on Repeat Timer to run the 688 seconds several times in a row, or click Add Timer to build a sequence.
- Share your setup with a link or export it as JSON, perfect for teams, classes and training partners.
Recommended Timers for Specific Activities
For additional timing needs, consider these helpful timers:
- Pull consistent espresso shots with the Barista Workflow Timer.
- Practise your talk with the Presentation Timer, including warnings before time runs out.
- Brew better coffee with the Coffee Brewing Timer.
- For structured workout sessions, try the HIIT Workout Timer with work and rest intervals.
Explore More Timers
Frequently Asked Questions About the 688 Second Timer
How long is a 688 second timer?
A 688 second timer runs for exactly 11 minutes and 28 seconds. That equals 11.5 minutes.
Can I pause or repeat the 688 second timer?
Yes. While the countdown is running you can pause and resume it at any time. Enable Repeat Timer before starting to run the 688 seconds up to 100 times in a row.
Will I hear an alarm when the time is up?
Yes. Every timer can play its own alarm sound. 13 tones are available, and the speaker button lets you listen to them first. Browsers only play sound while the tab is open and the device is not muted.
Do I need to install anything?
No. FinalTimer works directly in your browser on desktop, tablet and smartphone. There is no app, no registration and no cost.
Unlock the Power of 688 Seconds
Ready? Press Start Timer and let the 688 second timer do the counting. When the 688 seconds are over, the alarm and your final message will let you know on desktop, tablet or phone.
Plan Your 688 Seconds
Numbers that help you use the 688 second timer in practice, all calculated for exactly 11 minutes and 28 seconds.
When Does a 688-Second Countdown End?
Starting soon? Here is when the countdown ends for typical start times:
| Start | Timer ends |
|---|---|
| 07:00 (7:00 am) | 07:11:28 (7:11:28 am) |
| 09:00 (9:00 am) | 09:11:28 (9:11:28 am) |
| 12:00 (12:00 pm) | 12:11:28 (12:11:28 pm) |
| 14:30 (2:30 pm) | 14:41:28 (2:41:28 pm) |
| 18:00 (6:00 pm) | 18:11:28 (6:11:28 pm) |
| 21:00 (9:00 pm) | 21:11:28 (9:11:28 pm) |
Countdown Milestones
- A quarter done: after 2 minutes and 52 seconds, with 8 minutes and 36 seconds remaining.
- Halfway point: after 5 minutes and 44 seconds, with 5 minutes and 44 seconds remaining.
- Three quarters done: after 8 minutes and 36 seconds, with 2 minutes and 52 seconds remaining.
- Last 10 percent: after 10 minutes and 19 seconds, with 1 minute and 9 seconds remaining.
Speakers, teachers and exam supervisors often give a warning at the 75 % or 90 % mark. Add a second timer for the warning if you want an extra alarm.
Intervals That Fit Into 688 Seconds
- Tabata-style 20/10: 22 rounds of 20 seconds work and 10 seconds rest, which makes 2 complete 4-minute Tabata blocks.
- 30/30 intervals: 11 rounds of 30 seconds on and 30 seconds off.
- EMOM (every minute on the minute): 11 minutes, each starting with a fixed set of reps.
Calories Burned in 688 Seconds
Estimated energy use for common activities, calculated with MET values from the Compendium of Physical Activities (kcal = MET × body weight in kg × hours). Real values vary with fitness, age and intensity.
| Activity | 60 kg (132 lb) | 80 kg (176 lb) |
|---|---|---|
| Walking (4.8 km/h · 3 mph) | 40 kcal | 54 kcal |
| Brisk walking (5.6 km/h · 3.5 mph) | 49 kcal | 66 kcal |
| Jogging, general | 80 kcal | 107 kcal |
| Running (9.7 km/h · 6 mph) | 112 kcal | 150 kcal |
| Cycling, moderate (19-22 km/h) | 92 kcal | 122 kcal |
| Swimming laps, moderate | 67 kcal | 89 kcal |
| Jumping rope, moderate | 135 kcal | 180 kcal |
| Hatha yoga | 29 kcal | 38 kcal |
How Far You Get in 688 Seconds
Distance covered at typical average speeds without stops:
| Way of moving | Speed | Distance |
|---|---|---|
| Walking | 5 km/h | 956 m (1,045 yd) |
| Running | 10 km/h | 1.91 km (1.19 mi) |
| Cycling | 20 km/h | 3.82 km (2.38 mi) |
| Car on the motorway | 100 km/h | 19.1 km (11.9 mi) |
| High-speed train | 300 km/h | 57.3 km (35.6 mi) |
688 Seconds Compared With Real-World Durations
- 10:00: The Bitcoin network is designed to produce a new block roughly every ten minutes. (1 minute and 28 seconds shorter than this timer)
- 11:00: A hard-boiled egg needs about 10 to 12 minutes in boiling water. (28 seconds shorter than this timer)
- 12:00: An NBA quarter lasts 12 minutes of game time. (32 seconds longer than this timer)
- 12:35: Joshua Cheptegei set the 5000 m world record of 12:35.36 in Monaco in 2020. (1 minute and 7 seconds longer than this timer)
- 12:40: Sunlight needs about 12 and a half minutes to reach Mars. (1 minute and 12 seconds longer than this timer)