Time flies when you are busy, and a 398 second timer makes it visible. This free online countdown measures 6 minutes and 38 seconds precisely and lets you add your own text, an alarm and a final message.
When a 398 Second Timer Comes in Handy
A 398 second timer is useful in many situations:
- Steaming Vegetables: Broccoli, carrots or green beans are tender-crisp after a few minutes of steaming, and the 398-second countdown keeps them from turning mushy.
- Journaling: Write freely for 6 minutes and 38 seconds: a short journaling session clears your head and sharpens your priorities.
- Warm-Up & Cool-Down: Five to fifteen minutes of light movement before and after training prepare your body and help it recover.
- Tidy-Up Challenge: Pick one room and see how much you can clean before the 398 seconds are over. It is a game the whole family can play.
- Quick Workout Block: Squeeze in a bodyweight circuit, a core routine or a jump-rope session that lasts exactly 6 minutes and 38 seconds.
Did You Know? 398 Seconds in Perspective
A PechaKucha presentation shows 20 slides for 20 seconds each, exactly 6 minutes and 40 seconds. That is almost exactly the length of this 398 second timer. The difference is only 2 seconds.
Broken down into prime factors, 398 = 2 × 199.
How to Set a 398 Second Timer
- Everything is prepared: 06:38 is already entered, so one click on Start Timer is enough.
- Optionally add a label, enable the alarm and choose one of 13 alarm sounds (use the speaker button to preview them).
- Combine the 398-second block with breaks or other phases by adding timers; the whole sequence runs on its own.
- Share your setup with a link or export it as JSON, perfect for teams, classes and training partners.
Recommended Timers for Specific Activities
These use case timers come with complete, pre-configured sequences:
- Find the perfect steeping time with the Tea Brewing Timer.
- Short on time? The Tabata Timer delivers a complete 4-minute interval workout.
- Practise your talk with the Presentation Timer, including warnings before time runs out.
- For structured workout sessions, try the HIIT Workout Timer with work and rest intervals.
Explore More Timers
Frequently Asked Questions About the 398 Second Timer
How long is a 398 second timer?
A 398 second timer runs for exactly 6 minutes and 38 seconds. That equals 6.63 minutes.
Can I pause or repeat the 398 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 398 seconds up to 100 times in a row.
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.
Unlock the Power of 398 Seconds
Even a single countdown can change the way you manage time. Use the 398 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 398 Seconds
Numbers that help you use the 398 second timer in practice, all calculated for exactly 6 minutes and 38 seconds.
When Does a 398-Second Countdown End?
Starting soon? Here is when the countdown ends for typical start times:
| Start | Timer ends |
|---|---|
| 07:00 (7:00 am) | 07:06:38 (7:06:38 am) |
| 09:00 (9:00 am) | 09:06:38 (9:06:38 am) |
| 12:00 (12:00 pm) | 12:06:38 (12:06:38 pm) |
| 14:30 (2:30 pm) | 14:36:38 (2:36:38 pm) |
| 18:00 (6:00 pm) | 18:06:38 (6:06:38 pm) |
| 21:00 (9:00 pm) | 21:06:38 (9:06:38 pm) |
Countdown Milestones
- A quarter done: after 1 minute and 40 seconds, with 4 minutes and 59 seconds remaining.
- Halfway point: after 3 minutes and 19 seconds, with 3 minutes and 19 seconds remaining.
- Three quarters done: after 4 minutes and 59 seconds, with 1 minute and 40 seconds remaining.
- Last 10 percent: after 5 minutes and 58 seconds, with 40 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 398 Seconds
- Tabata-style 20/10: 13 rounds of 20 seconds work and 10 seconds rest, which makes 1 complete 4-minute Tabata block.
- 30/30 intervals: 6 rounds of 30 seconds on and 30 seconds off.
- EMOM (every minute on the minute): 6 minutes, each starting with a fixed set of reps.
Calories Burned in 398 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) | 23 kcal | 31 kcal |
| Brisk walking (5.6 km/h · 3.5 mph) | 29 kcal | 38 kcal |
| Jogging, general | 46 kcal | 62 kcal |
| Running (9.7 km/h · 6 mph) | 65 kcal | 87 kcal |
| Cycling, moderate (19-22 km/h) | 53 kcal | 71 kcal |
| Swimming laps, moderate | 38 kcal | 51 kcal |
| Jumping rope, moderate | 78 kcal | 104 kcal |
| Hatha yoga | 17 kcal | 22 kcal |
How Far You Get in 398 Seconds
Distance covered at typical average speeds without stops:
| Way of moving | Speed | Distance |
|---|---|---|
| Walking | 5 km/h | 553 m (605 yd) |
| Running | 10 km/h | 1.11 km (0.69 mi) |
| Cycling | 20 km/h | 2.21 km (1.37 mi) |
| Car on the motorway | 100 km/h | 11.1 km (6.87 mi) |
398 Seconds Compared With Real-World Durations
- 06:00: Sunlight takes about 6 minutes to reach Venus. (38 seconds shorter than this timer)
- 06:23: The total solar eclipse of 2 August 2027 will offer up to 6 minutes and 23 seconds of totality, one of the longest total eclipses visible from land in the 21st century. (15 seconds shorter than this timer)
- 06:30: The Eagles’ “Hotel California” runs about 6 minutes and 30 seconds. (8 seconds shorter than this timer)
- 06:40: A PechaKucha presentation shows 20 slides for 20 seconds each, exactly 6 minutes and 40 seconds. (2 seconds longer than this timer)
- 07:11: The Beatles’ “Hey Jude” (1968) runs 7 minutes and 11 seconds, which was unusually long for a single at the time. (33 seconds longer than this timer)