Planning something that takes 804 seconds? The 804 Second Timer turns that time into a clear visual countdown with a progress bar, optional alarm sound and fullscreen view for the whole room.
Why Use a 804 Second Timer?
A 804 second timer is useful in many situations:
- Brainstorming Round: Collect ideas in a team without discussing them. A fixed 804-second round keeps the energy high.
- Power Nap: A nap of 10 to 25 minutes refreshes you without the grogginess of deep sleep. Set the 804 second timer and relax.
- Classroom Activities: Teachers use a 804 second timer for reading time, group tasks or quiz rounds so everyone can see how much time is left.
- Face or Hair Mask: Most masks and treatments need 5 to 20 minutes to work, and the 804 second timer tells you when to rinse.
- Screen-Time Limits: Agree on 13 minutes and 24 seconds of gaming or social media and let the alarm end the session instead of a discussion.
Did You Know? 804 Seconds in Perspective
Half-time in a football (soccer) match lasts 15 minutes. This 804 second timer ends 1 minute and 36 seconds earlier.
Broken down into prime factors, 804 = 2² × 3 × 67.
Start Your 804 Second Timer in Seconds
- The timer at the top of this page is already set to 13:24. 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).
- Need intervals? Use Repeat Timer or add more timers. They will run one after another automatically.
- Share your setup with a link or export it as JSON, perfect for teams, classes and training partners.
Recommended Timers for Specific Activities
Related timers with ready-made programs:
- Find the perfect steeping time with the Tea Brewing Timer.
- Pull consistent espresso shots with the Barista Workflow Timer.
- Brew better coffee with the Coffee Brewing Timer.
- For precision cooking, the Pasta Cooking Timer makes sure your pasta is perfectly al dente.
Other Timers You Might Like
Frequently Asked Questions About the 804 Second Timer
How long is a 804 second timer?
A 804 second timer runs for exactly 13 minutes and 24 seconds. That equals 13.4 minutes.
Can I pause or repeat the 804 second timer?
Absolutely. Use the pause button to stop the countdown and continue later. With the repeat option the 804 second timer restarts automatically as often as you like.
Will I hear an alarm when the time is up?
Yes, if Enable Alarm is checked. You can choose between 13 alarm sounds and preview them before starting. Keep the browser tab open and the sound of your device switched on.
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.
Start Your 804 Second Timer Now
A clear time frame turns intentions into action. Set your 804 second timer, commit to the task in front of you and let FinalTimer keep track of the 13 minutes and 24 seconds. No app, no account, completely free.
Plan Your 804 Seconds
Numbers that help you use the 804 second timer in practice, all calculated for exactly 13 minutes and 24 seconds.
When Does a 804-Second Countdown End?
Starting soon? Here is when the countdown ends for typical start times:
| Start | Timer ends |
|---|---|
| 07:00 (7:00 am) | 07:13:24 (7:13:24 am) |
| 09:00 (9:00 am) | 09:13:24 (9:13:24 am) |
| 12:00 (12:00 pm) | 12:13:24 (12:13:24 pm) |
| 14:30 (2:30 pm) | 14:43:24 (2:43:24 pm) |
| 18:00 (6:00 pm) | 18:13:24 (6:13:24 pm) |
| 21:00 (9:00 pm) | 21:13:24 (9:13:24 pm) |
Countdown Milestones
- A quarter done: after 3 minutes and 21 seconds, with 10 minutes and 3 seconds remaining.
- Halfway point: after 6 minutes and 42 seconds, with 6 minutes and 42 seconds remaining.
- Three quarters done: after 10 minutes and 3 seconds, with 3 minutes and 21 seconds remaining.
- Last 10 percent: after 12 minutes and 4 seconds, with 1 minute and 20 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 804 Seconds
- Tabata-style 20/10: 26 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 804 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) | 47 kcal | 63 kcal |
| Brisk walking (5.6 km/h · 3.5 mph) | 58 kcal | 77 kcal |
| Jogging, general | 94 kcal | 125 kcal |
| Running (9.7 km/h · 6 mph) | 131 kcal | 175 kcal |
| Cycling, moderate (19-22 km/h) | 107 kcal | 143 kcal |
| Swimming laps, moderate | 78 kcal | 104 kcal |
| Jumping rope, moderate | 158 kcal | 211 kcal |
| Hatha yoga | 34 kcal | 45 kcal |
How Far You Get in 804 Seconds
Distance covered at typical average speeds without stops:
| Way of moving | Speed | Distance |
|---|---|---|
| Walking | 5 km/h | 1.12 km (0.69 mi) |
| Running | 10 km/h | 2.23 km (1.39 mi) |
| Cycling | 20 km/h | 4.47 km (2.78 mi) |
| Car on the motorway | 100 km/h | 22.3 km (13.9 mi) |
| High-speed train | 300 km/h | 67 km (41.6 mi) |
804 Seconds Compared With Real-World Durations
- 12:00: An NBA quarter lasts 12 minutes of game time. (1 minute and 24 seconds shorter than this timer)
- 12:35: Joshua Cheptegei set the 5000 m world record of 12:35.36 in Monaco in 2020. (48.64 seconds shorter than this timer)
- 12:40: Sunlight needs about 12 and a half minutes to reach Mars. (44 seconds shorter than this timer)
- 14:00: A rugby sevens match has only 14 minutes of playing time: two halves of seven minutes. (36 seconds longer than this timer)
- 15:00: Half-time in a football (soccer) match lasts 15 minutes. (1 minute and 36 seconds longer than this timer)