Some tasks need exactly 13 minutes and 38 seconds. Instead of checking the clock again and again, let the 818 Second Timer keep track for you. It runs right here in your browser and alerts you the moment time is up.
When a 818 Second Timer Comes in Handy
A 818 second timer is useful in many situations:
- Screen-Time Limits: Agree on 13 minutes and 38 seconds of gaming or social media and let the alarm end the session instead of a discussion.
- Short Rest: Close your eyes for 13 minutes and 38 seconds and let the alarm bring you back before you fall into deep sleep.
- Flashcard Session: Review vocabulary or exam cards for 13 minutes and 38 seconds. Short, regular sessions beat long cramming.
- Power Nap: A nap of 10 to 25 minutes refreshes you without the grogginess of deep sleep. Set the 818 second timer and relax.
- Face or Hair Mask: Most masks and treatments need 5 to 20 minutes to work, and the 818 second timer tells you when to rinse.
Fun Fact: What Happens in 818 Seconds?
A rugby sevens match has only 14 minutes of playing time: two halves of seven minutes. Your 818 second timer is 22 seconds shorter.
818 is a palindrome: it reads the same forwards and backwards.
How to Use the 818 Second Timer
- Everything is prepared: 13:38 is already entered, so one click on Start Timer is enough.
- Give your countdown a name in the text field, switch on the alarm and pick the sound you like best.
- Need intervals? Use Repeat Timer or add more timers. They will run one after another automatically.
- Switch to fullscreen for big digits and save your configuration with Export Settings to load it again later.
Recommended Timers for Specific Activities
Related timers with ready-made programs:
- Give every product enough time to work with the Skin Care Routine Timer.
- Find the perfect steeping time with the Tea Brewing Timer.
- Brew better coffee with the Coffee Brewing Timer.
- Refine your pacing with the Speech Rehearsal Timer.
More Timer Options
Frequently Asked Questions About the 818 Second Timer
How long is a 818 second timer?
A 818 second timer runs for exactly 13 minutes and 38 seconds. That equals 13.6 minutes.
Can I pause or repeat the 818 second timer?
You can pause at any moment (also with the space bar) and resume exactly where you stopped. To run the 818 seconds several times, switch on Repeat Timer and choose how often.
Will I hear an alarm when the time is up?
Activate Enable Alarm, pick one of the 13 sounds and the 818 second timer will ring when it reaches zero. Make sure the tab stays open and your 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 818 Seconds
Even a single countdown can change the way you manage time. Use the 818 second timer as often as you like, save your favourite setup as a JSON file and share it with friends, students or your team.
Plan Your 818 Seconds
Numbers that help you use the 818 second timer in practice, all calculated for exactly 13 minutes and 38 seconds.
When Does a 818-Second Countdown End?
Starting soon? Here is when the countdown ends for typical start times:
| Start | Timer ends |
|---|---|
| 07:00 (7:00 am) | 07:13:38 (7:13:38 am) |
| 09:00 (9:00 am) | 09:13:38 (9:13:38 am) |
| 12:00 (12:00 pm) | 12:13:38 (12:13:38 pm) |
| 14:30 (2:30 pm) | 14:43:38 (2:43:38 pm) |
| 18:00 (6:00 pm) | 18:13:38 (6:13:38 pm) |
| 21:00 (9:00 pm) | 21:13:38 (9:13:38 pm) |
Countdown Milestones
- A quarter done: after 3 minutes and 25 seconds, with 10 minutes and 14 seconds remaining.
- Halfway point: after 6 minutes and 49 seconds, with 6 minutes and 49 seconds remaining.
- Three quarters done: after 10 minutes and 14 seconds, with 3 minutes and 25 seconds remaining.
- Last 10 percent: after 12 minutes and 16 seconds, with 1 minute and 22 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 818 Seconds
- Tabata-style 20/10: 27 rounds of 20 seconds work and 10 seconds rest, which makes 3 complete 4-minute Tabata blocks.
- 30/30 intervals: 13 rounds of 30 seconds on and 30 seconds off.
- EMOM (every minute on the minute): 13 minutes, each starting with a fixed set of reps.
Calories Burned in 818 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) | 48 kcal | 64 kcal |
| Brisk walking (5.6 km/h · 3.5 mph) | 59 kcal | 78 kcal |
| Jogging, general | 95 kcal | 127 kcal |
| Running (9.7 km/h · 6 mph) | 134 kcal | 178 kcal |
| Cycling, moderate (19-22 km/h) | 109 kcal | 145 kcal |
| Swimming laps, moderate | 79 kcal | 105 kcal |
| Jumping rope, moderate | 161 kcal | 214 kcal |
| Hatha yoga | 34 kcal | 45 kcal |
How Far You Get in 818 Seconds
Distance covered at typical average speeds without stops:
| Way of moving | Speed | Distance |
|---|---|---|
| Walking | 5 km/h | 1.14 km (0.71 mi) |
| Running | 10 km/h | 2.27 km (1.41 mi) |
| Cycling | 20 km/h | 4.54 km (2.82 mi) |
| Car on the motorway | 100 km/h | 22.7 km (14.1 mi) |
| High-speed train | 300 km/h | 68.2 km (42.4 mi) |
818 Seconds Compared With Real-World Durations
- 12:35: Joshua Cheptegei set the 5000 m world record of 12:35.36 in Monaco in 2020. (1 minute and 3 seconds shorter than this timer)
- 12:40: Sunlight needs about 12 and a half minutes to reach Mars. (58 seconds shorter than this timer)
- 14:00: A rugby sevens match has only 14 minutes of playing time: two halves of seven minutes. (22 seconds longer than this timer)
- 15:00: Half-time in a football (soccer) match lasts 15 minutes. (1 minute and 22 seconds longer than this timer)
- 15:00: Each quarter of an NFL game lasts 15 minutes of game time. (1 minute and 22 seconds longer than this timer)