What is a one-hour timer useful for?

An hour-long study or work session, a workout class, a parking or meter window, a cooking stage, or a timed exam section. It is the default planning unit for a reason.

Will it alert me if I am in another app?

The hour is timed accurately from the real end time, but a backgrounded tab can delay the alarm by up to a minute, and a closed tab will not alert you at all — there is no server behind it. Keep the tab open; on iPhone, keep the side mute switch off.

60-Minute Timer

An hour is the round number everything defaults to: an hour of study or focused work, a fitness class, a parking meter, a slow-cooking stage, an exam section. It is long enough to complete something substantial and the easiest interval to plan a day around. Set the one-hour countdown, decide what the hour is actually for, and let the alarm free you from glancing at the clock while you work.

60 min

JavaScript is required to run this timer — enable it to start, pause, and hear sound alerts.

1:00:00

DurationHoursMinutesSeconds

Space start/pause R reset F fullscreen

Sound

Enable JavaScript to see background-alert options — this timer keeps correct time either way, but notifications and the install prompt both require it.

Frequently asked questions

What is a one-hour timer useful for?: An hour-long study or work session, a workout class, a parking or meter window, a cooking stage, or a timed exam section. It is the default planning unit for a reason.
Will it alert me if I am in another app?: The hour is timed accurately from the real end time, but a backgrounded tab can delay the alarm by up to a minute, and a closed tab will not alert you at all — there is no server behind it. Keep the tab open; on iPhone, keep the side mute switch off.

This timer keeps the exact time even if you switch tabs. If this tab or your browser closes, nothing can alert you at the exact finish time — there's no server behind this, by design. Come back any time and we'll tell you honestly how long ago it ended.