90 SECOND TIMER
Free online 90-second countdown. Press Start or choose a different duration below.
90 SECOND TIMER ONLINE
Ninety seconds is a popular middle-ground rest between strength training sets: long enough to catch your breath, short enough to keep the session moving. French press coffee reaches optimal extraction at 90 seconds for a lighter, more tea-like brew compared to the standard four minutes which produces a bolder cup. Physical therapy sessions use 90 second holds for deep static stretches targeting the hip flexors and hamstrings.
How It Works
Press Start and the progress ring begins its 90 second drain. The rolling digit display shows minutes and seconds counting down. Pause freezes the timer at the current position, and Resume picks up from the same millisecond. The timer is drift-corrected using Date.now(), so it stays accurate even if you switch tabs to check your workout log or recipe. At zero, an alarm fires through Web Audio API and a visual overlay appears on screen.
When to Use This Timer
Use this 90 second timer between heavy sets of bench press, squats, or deadlifts during hypertrophy training. Set it while steeping a French press for a lighter coffee extraction. Debate coaches use 90 seconds for cross-examination practice rounds. Physical therapists prescribe 90 second static holds for deep hamstring and hip flexor stretches that require sustained pressure to trigger the Golgi tendon organ response.
The Science of Rest Intervals
Research on rest length is mixed. In a 2016 study in the Journal of Strength and Conditioning Research, Schoenfeld and colleagues found that trained men who rested 3 minutes between sets gained more strength and muscle than those who rested 1 minute. Ninety seconds is a practical compromise for shorter sessions; for your heaviest sets, a longer rest may serve you better.
Frequently Asked Questions
Why is 90 seconds recommended for strength training rest?
It is a reasonable middle ground for many lifters, but longer is not worse. A 2016 study by Schoenfeld and colleagues found more strength and muscle gain with 3-minute rests than with 1-minute rests in trained men. Use 90 seconds when time is short and rest longer before your heaviest sets.
How does a 90 second French press brew differ from 4 minutes?
At 90 seconds, the coffee is lighter-bodied with brighter acidity and less bitterness. The four-minute standard produces a fuller, heavier cup. Some specialty coffee roasters recommend the shorter steep for single-origin light roasts to highlight floral and fruity notes.
How long is Lincoln-Douglas debate cross-examination?
In standard LD format, cross-examination periods are 3 minutes, but many practice rounds and novice tournaments use shortened 90 second cross-ex to train concise questioning. The National Speech and Debate Association publishes format guidelines on their website.
Can I use this timer for meditation?
While 90 seconds is short for a full meditation session, it works well for micro-meditations or single-cycle breathing exercises such as box breathing (inhale 4 seconds, hold 4, exhale 4, hold 4, repeated about 5 times).
What happens if I accidentally close the browser?
The timer stops and no alarm fires. Timer Hub runs entirely in the browser with no background process. For mission-critical timing such as cooking safety, consider using your phone native alarm app as a backup.
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How to Set a 90s Timer and Use It Well
A 90s timer counts down 90 seconds, which is 1 minute 30 seconds or 1.5 minutes. On this page, the timer is already set to 90 seconds. Press Start and it begins counting down right away.
Set a 90 second timer in three steps
- Open the page. The display already shows 1:30.
- Press Start when your activity begins.
- When the alarm sounds, press Dismiss. Press Reset to run 90 seconds again.
Example: total rest time across a workout
If you rest 90 seconds between sets, you rest one time fewer than the number of sets. There is no rest after the last set. Here is the total rest time for common set counts.
| Sets | Rests between sets | Total rest |
|---|---|---|
| 3 | 2 | 180 s (3:00) |
| 4 | 3 | 270 s (4:30) |
| 5 | 4 | 360 s (6:00) |
| 6 | 5 | 450 s (7:30) |
| 8 | 7 | 630 s (10:30) |
This only counts rest. The time you spend lifting comes on top of it.
Tips for using the timer
- Start it as soon as the set ends. Waiting even 15 seconds to press Start turns a 90 second rest into a rest of about 1 minute 45 seconds.
- Check your volume first. The alarm is a sound plus an on-screen message. If your device is muted, you will only see the message.
- Keep the tab open. You can switch to another tab to log a set or read a recipe. Closing the page stops the timer.
- Use Pause for interruptions. If someone asks you a question mid-rest, pause and resume instead of restarting.
- Use one tap per round. Reset returns the display to 1:30, so you can repeat the same interval without changing any settings.
Can I change the 90 second timer to 80 or 100 seconds?
Yes. Press -10s to shorten the countdown to 80 seconds, or +10s to lengthen it to 100 seconds, then press Start. You can also pick one of the preset durations shown under the timer.