45 Minute Timer

Three quarters of an hour

Forty-five minutes is 2,700 seconds. The number people actually use it for is the one that follows: 45 plus a 15 minute break is exactly 60, which is why a timetable of forty-five minute lessons still starts every hour on the hour. Four runs come to three hours.

Where 45 minutes shows up

• The school lesson and the university academic hour, both built as forty-five with the rest of the hour left for moving rooms.
• A half of association football, forty-five minutes of regulation before the referee adds stoppage time on top.
• Gym sessions, class-based fitness and swimming lanes, usually booked in this block.
• A long focus block for people who lose more than they gain by stopping at twenty-five.

The 45 and 15 pattern

Set this timer, then set the 15 minute timer for the break, and your blocks stay pinned to the clock all day. If forty-five is slightly too short for the task, 50 minutes leaves ten minutes instead.

Before you rely on the tone

The countdown is measured against your device clock, so a tab left in the background still lands on time. A phone that puts itself to sleep may never play the sound. Do not lean on it for anything where a missed alarm costs you – medication, an exam, or a cooking step that burns.

Nearby lengths

Also here: 30 minutes, 1 hour, and the rest of the presets on the timer hub.