Online countdown · 1:40:00

100 Minute Timer

Free 100 minute timer that counts down 1 hour and 40 minutes. Press start and the alarm rings when the time is up. Add labels, repeats or more timers anytime.

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The 100 minute timer is your gateway to focused productivity, mindful breaks, or efficient workflows. It stretches well beyond a typical Pomodoro but still avoids the fatigue of longer work marathons. This online timer is ideal when you want to dive deep into a project, lead a group activity, or manage long-duration tasks with precision.

Using a timer for 100 minutes creates a sense of commitment. It tells your brain that you’re carving out a meaningful block of time, whether to create, study, reflect, or recover. The 100 minute countdown timer provides enough space for flow while keeping you accountable to the clock.

When to Use a 100 Minute Timer

  • Deep Work Sessions: Ideal for extended creative sessions, writing blocks, or coding marathons. Pair it with your Content Creation Timer.
  • Study or Reading Blocks: Great for long stretches of uninterrupted focus, whether you’re studying for exams or diving into a challenging book. Also works well with the Exam Preparation Timer.
  • Meetings & Workshops: Time structured discussions or collaborative work with a 100 minute countdown. Keep your session on track with the Meeting Timer.
  • Mindful Long Breaks: A longer mindfulness or stretching session can help regulate energy in a long workday. Complement it with the Stretching Routine Timer.
  • Kitchen Projects: Bread proofing, slow roasting, or complex cooking steps often require extended, timed care. Explore with the Bread Baking Timer.

Fun Fact: What Happens in 100 Minutes?

Many full-length movies run about 100 minutes or less. In other words, you could watch a film like “Toy Story” or “Lady Bird” from start to finish within this timer!

The film classic Casablanca (1942) runs about 102 minutes. Your 100 minute timer is 2 minutes shorter.

Start Your 100 Minute Countdown

Set your 100 minute timer and make the most of your time. Whether you’re building something big, managing a long session, or resting with intention, this duration offers the freedom and focus you need to stay in control of your day.

Explore More Timers

+1 Minute Timers 100m Interval Timers Popular Timers
101 minute timer 200 minute timer 1 minute timer
102 minute timer 300 minute timer 30 minute timer
103 minute timer 400 minute timer 25 minute timer
104 minute timer 500 minute timer 45 minute timer
105 minute timer 600 minute timer 10 minute timer
106 minute timer 700 minute timer 90 minute timer
107 minute timer 800 minute timer 60 minute timer
108 minute timer 900 minute timer 15 minute timer
109 minute timer 1000 minute timer 5 minute timer
110 minute timer 1 hour timer 7 minute timer
111 minute timer 2 hour timer 20 minute timer
112 minute timer 3 hour timer 12 minute timer

Simplicity in a Complex World

There’s beauty in something as simple as a countdown. A 100 minute timer gives you permission to focus, to pause, or to create a boundary within your day. It brings order to chaos, clarity to confusion, and flow to your routine. Simple. Effective. Yours to use.

Plan Your 100 Minutes

Numbers that help you use the 100 minute timer in practice, all calculated for exactly 1 hour and 40 minutes.

When Does a 100-Minute Countdown End?

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

StartTimer ends
06:00 (6:00 am)07:40 (7:40 am)
08:00 (8:00 am)09:40 (9:40 am)
09:00 (9:00 am)10:40 (10:40 am)
12:00 (12:00 pm)13:40 (1:40 pm)
18:00 (6:00 pm)19:40 (7:40 pm)
22:00 (10:00 pm)23:40 (11:40 pm)

Countdown Milestones

  • A quarter done: after 25 minutes, with 1 hour and 15 minutes remaining.
  • Halfway point: after 50 minutes, with 50 minutes remaining.
  • Three quarters done: after 1 hour and 15 minutes, with 25 minutes remaining.
  • Last 10 percent: after 1 hour and 30 minutes, with 10 minutes 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 100 Minutes

  • Pomodoro (25 min focus + 5 min break, 15 min after every fourth): 3 focus sessions with 1 hour and 15 minutes of focused work.
  • 52/17 method: 1 cycle of 52 minutes work and 17 minutes rest.
  • 90-minute deep work blocks with 20-minute breaks: 1 block.

Calories Burned in 100 Minutes

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)350 kcal467 kcal
Brisk walking (5.6 km/h · 3.5 mph)430 kcal573 kcal
Hiking600 kcal800 kcal
Cycling, leisurely (under 16 km/h)400 kcal533 kcal
Cycling, moderate (19-22 km/h)800 kcal1,067 kcal
Swimming laps, moderate580 kcal773 kcal
Hatha yoga250 kcal333 kcal

How Far You Get in 100 Minutes

Distance covered at typical average speeds without stops:

Way of movingSpeedDistance
Walking5 km/h8.33 km (5.18 mi)
Running10 km/h16.7 km (10.4 mi)
Cycling20 km/h33.3 km (20.7 mi)
Car on the motorway100 km/h167 km (104 mi)
High-speed train300 km/h500 km (311 mi)
Passenger jet (cruise)900 km/h1,500 km (932 mi)

100 Minutes Compared With Real-World Durations

  • 1:35:00: The Hubble Space Telescope orbits the Earth once about every 95 minutes. (5 minutes shorter than this timer)
  • 1:36:12: Sputnik 1, the first artificial satellite (1957), needed about 96 minutes for one orbit. (3 minutes and 48 seconds shorter than this timer)
  • 1:42:00: The film classic Casablanca (1942) runs about 102 minutes. (2 minutes longer than this timer)
  • 1:42:57: The total lunar eclipse of 27 July 2018, the longest of the 21st century, lasted about 1 hour and 43 minutes. (2 minutes and 57 seconds longer than this timer)
  • 1:43:00: Home Alone (1990) runs about 103 minutes. (3 minutes longer than this timer)