90 Minute Timer
Ninety minutes is almost exactly the length of a feature film or a soccer match, which is probably why it's such a familiar unit of "a while" even outside of movies.
Sleep researchers also point to roughly 90 minutes as the length of one full sleep cycle, which is where the Sleep Calculator's own math comes from.
It's already set to 1.5:00:00 below — press Space or Start to begin. Reloading mid-countdown resumes it rather than resetting, since it tracks a fixed end time stored on your device, not a server.
What fits in 1.5 hours
A rough sense of scale for a 1.5 hours block of time:
- A feature film
- A full soccer match
- A long study or work sprint with a built-in stretch break
- Slow-roasting a small chicken
- A deep-clean of a whole small apartment room by room
Frequently asked
- How do I start a 1.5 hours timer?
- Type 1.5:00 into the timer above, or just use it as-is — it's already set to 1.5 hours — then press Space or the Start button.
- Does the timer keep running if I switch tabs?
- Yes — it keeps counting in the background and still chimes when it finishes, even if this tab isn't focused.
- Does it need an internet connection?
- No, once this page has loaded the timer works fully offline.