90 Minute Workout Timer
Free online 90 minutes workout with alarm sounds, repeat mode, and browser notifications. No sign-up, no ads.
"You don't have to be extreme, just consistent."
A 90 minutes workout timer keeps your training honest. 90 minutes is deep session — mastery sessions, extended workshops, and ultradian rhythm alignment. The countdown does the counting while you push through the reps.
Circuit ideas
FAQs
Can I use this for HIIT intervals?
Yes. Set the 90 minutes timer and use the interval timer tool for work/rest intervals within your session.
Will it alert me when time’s up?
Yes. Enable notifications and you’ll get an alarm when the workout block ends, even if the screen is off.
What can you actually do in 90 minutes?
A full workout class, a university lecture, a coding sprint, a slow-cooked meal prep, or a deep meditation session. 90 minutes is the goldilocks zone for deep work.
How accurate is a 90-minute countdown?
The timer counts milliseconds. For a 90-minute count, it’s within a fraction of a second — accurate enough for any session.