21 Minute Timer
Set a timer for 21 minutes. Need an alarm in 21 minutes? Press start and it rings when the countdown hits zero.
Ready
More options
Shortcuts: Space start or pause, R reset, F fullscreen, M mute
About this timer
One minute past the round 20: the middle of a recipe that says 20 to 22 minutes, or a 20-minute nap with a minute to settle first. Close enough to 20 that the plan holds, exact enough to match the packet.
Long enough for real work, short enough that you can hold your attention for the whole stretch. Study blocks, cooking stages, meetings with a firm end, and workouts all land here. The timer counts down from the moment you press start, not from when the tab was last visible.
Need a different length? Set a custom timer in hours, minutes and seconds, or pick one of the presets below.
21 Minutes in other units
21 Minutes = 1,260 seconds = 0.35 hours
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Questions about how it works? See the FAQ