Tip: press Space to start / pause. Screen stays awake while running.
25 Minute HIIT Workout Timer
At this length the session becomes conditioning rather than pure intensity, so pace the early rounds or the last third falls apart.
How to use this timer
Warm up first, press Start, and work through your rounds. Turn on voice cues so you don't have to watch the screen.
About this length
A 25-minute HIIT workout timer for a full high-intensity session. Start it at the first exercise and push until the alarm. The colour shift in the last minute tells you when to empty the tank.
More timers like this one are listed on the workout timers page.
Frequently asked questions
How long is a 25-minute hiit workout timer?
It counts down exactly 1500 seconds (25 minute) and then plays an alarm that loops until you dismiss it.
Is 25 minute too long for hiit workout?
At this length the session becomes conditioning rather than pure intensity, so pace the early rounds or the last third falls apart.
Will it still ring if my screen locks?
Leave the tab open and the alarm fires on time. On mobile, enable notifications so the alert reaches you with the screen off.
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