Online countdown · 16:38

998 Second Timer

Free 998 second timer that counts down 16 minutes and 38 seconds. Press start and the alarm rings when the time is up. Add labels, repeats or more timers anytime.

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With this 998-second countdown you always know how much time is left. 16 minutes and 38 seconds is set and ready. Start the 998 second timer with one click, pause it whenever you need and restart it just as easily.

Why Use a 998 Second Timer?

A 998 second timer is useful in many situations:

  • Power Nap: A nap of 10 to 25 minutes refreshes you without the grogginess of deep sleep. Set the 998 second timer and relax.
  • Pomodoro-Style Focus: A 998-second block works like a Pomodoro session: one task, no distractions, then a well-earned break.
  • Face or Hair Mask: Most masks and treatments need 5 to 20 minutes to work, and the 998 second timer tells you when to rinse.
  • Classroom Activities: Teachers use a 998 second timer for reading time, group tasks or quiz rounds so everyone can see how much time is left.
  • Tidy-Up Challenge: Pick one room and see how much you can clean before the 998 seconds are over. It is a game the whole family can play.

Fun Fact: What Happens in 998 Seconds?

Each quarter of an NFL game lasts 15 minutes of game time. The 998 second timer lasts 1 minute and 38 seconds longer.

Broken down into prime factors, 998 = 2 × 499.

How to Use the 998 Second Timer

  1. Check the preset time (16:38) and click Start Timer; the countdown begins immediately.
  2. Type a short note into the text field so you remember what the 998 seconds are for, and keep the alarm switched on.
  3. Need intervals? Use Repeat Timer or add more timers. They will run one after another automatically.
  4. Share your setup with a link or export it as JSON, perfect for teams, classes and training partners.

Recommended Timers for Specific Activities

Looking for a ready-made routine instead? Try one of these presets:

More Timer Options

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Frequently Asked Questions About the 998 Second Timer

How long is a 998 second timer?

A 998 second timer runs for exactly 16 minutes and 38 seconds. That equals 16.6 minutes.

Can I pause or repeat the 998 second timer?

Absolutely. Use the pause button to stop the countdown and continue later. With the repeat option the 998 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.

Unlock the Power of 998 Seconds

16 minutes and 38 seconds can be a lot or a little. It depends on how you use them. With a visible countdown you plan better, procrastinate less and finish what you started. Your 998 Second Timer is ready when you are.

Plan Your 998 Seconds

Numbers that help you use the 998 second timer in practice, all calculated for exactly 16 minutes and 38 seconds.

When Does a 998-Second Countdown End?

Starting soon? Here is when the countdown ends for typical start times:

StartTimer ends
07:00 (7:00 am)07:16:38 (7:16:38 am)
09:00 (9:00 am)09:16:38 (9:16:38 am)
12:00 (12:00 pm)12:16:38 (12:16:38 pm)
14:30 (2:30 pm)14:46:38 (2:46:38 pm)
18:00 (6:00 pm)18:16:38 (6:16:38 pm)
21:00 (9:00 pm)21:16:38 (9:16:38 pm)

Countdown Milestones

  • A quarter done: after 4 minutes and 10 seconds, with 12 minutes and 29 seconds remaining.
  • Halfway point: after 8 minutes and 19 seconds, with 8 minutes and 19 seconds remaining.
  • Three quarters done: after 12 minutes and 29 seconds, with 4 minutes and 10 seconds remaining.
  • Last 10 percent: after 14 minutes and 58 seconds, with 1 minute and 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 998 Seconds

  • Tabata-style 20/10: 33 rounds of 20 seconds work and 10 seconds rest, which makes 4 complete 4-minute Tabata blocks.
  • 30/30 intervals: 16 rounds of 30 seconds on and 30 seconds off.
  • EMOM (every minute on the minute): 16 minutes, each starting with a fixed set of reps.

Calories Burned in 998 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.

Activity60 kg (132 lb)80 kg (176 lb)
Walking (4.8 km/h · 3 mph)58 kcal78 kcal
Brisk walking (5.6 km/h · 3.5 mph)72 kcal95 kcal
Jogging, general116 kcal155 kcal
Running (9.7 km/h · 6 mph)163 kcal217 kcal
Cycling, moderate (19-22 km/h)133 kcal177 kcal
Swimming laps, moderate96 kcal129 kcal
Jumping rope, moderate196 kcal262 kcal
Hatha yoga42 kcal55 kcal

How Far You Get in 998 Seconds

Distance covered at typical average speeds without stops:

Way of movingSpeedDistance
Walking5 km/h1.39 km (0.86 mi)
Running10 km/h2.77 km (1.72 mi)
Cycling20 km/h5.54 km (3.45 mi)
Car on the motorway100 km/h27.7 km (17.2 mi)
High-speed train300 km/h83.2 km (51.7 mi)

998 Seconds Compared With Real-World Durations

  • 15:00: Half-time in a football (soccer) match lasts 15 minutes. (1 minute and 38 seconds shorter than this timer)
  • 15:28: Alan Shepard’s Freedom 7, the first American human spaceflight in May 1961, lasted 15 minutes and 28 seconds. (1 minute and 10 seconds shorter than this timer)
  • 17:30: White rice usually simmers for about 15 to 20 minutes before it is ready. (52 seconds longer than this timer)
  • 18:00: TED talks are limited to a maximum of 18 minutes. (1 minute and 22 seconds longer than this timer)
  • 18:00: A classic risotto needs about 18 minutes of gentle cooking and stirring. (1 minute and 22 seconds longer than this timer)