4 Hour Timer
Set a timer for 4 hours. Need an alarm in 4 hours? 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
Long work sessions, slow-cooker recipes on high, or medication taken every four hours. Always follow the label or your doctor's instructions. Keep your device awake: if it sleeps, the timer can't ring.
Timers this long are set once and forgotten: baking and braising, parking meters, long study or work blocks, and charging cycles. Because the countdown is anchored to a real clock time, it stays accurate for hours in a background tab, and it survives a page refresh.
Need a different length? Set a custom timer in hours, minutes and seconds, or pick one of the presets below.
4 Hours in other units
4 Hours = 14,400 seconds = 240 minutes
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Questions about how it works? See the FAQ