45 minute timer, three quarters of an hour.

A 45 minute timer counts down 2,700 seconds and rings at zero. Forty-five minutes is three quarters of an hour, long enough for a lesson or a deep study block, with 15 minutes of an hour left over for a break. This timer has soft cues at halfway and with one minute left, a label, rounds, and full screen mode. It keeps correct time in a background tab.

How to use the 45 minute timer

1. Press Start or the space bar. The countdown begins at 45:00 and the line under the numbers shows the clock time it ends.
2. Pick a label under What is it for?, or type your own in Label. It shows above the countdown, in the tab title and in the alarm notification.
3. Choose Rounds if you want the 45 minutes to repeat. A single bell marks the end of each round and the next one starts at once.
4. Pick the alarm Sound and the Volume, and press Hear the sound to check it before you start.
5. Tick a soft cue if you want one: Soft chime at halfway, Soft chime when 1 minute is left or Tick the last 10 seconds.
6. Press Pause to hold the time and Resume to carry on. +1 min adds a minute. When it rings, press Stop the alarm, or Start again to run it once more.

45 minutes on, 15 off

Forty-five plus fifteen is sixty, so a 45 minute block with a 15 minute break fits one hour exactly. Start the timer on the hour, say 2:00 pm. It rings at 2:45 pm. Take the break, then start the next block at 3:00 pm. Run the break with the 15 minute timer so it ends on time too. This is a planning pattern, not a rule from any study.

A 45 minute lesson

A teacher or a tutor can use the halfway chime as a signal. It sounds when 22:30 is left, which is the middle of the lesson. The one minute left chime is the cue to collect questions. Put the timer in full screen on the board or a spare screen, and set Sound to Chime for a gentler end. If your lesson length is not 45 minutes, type yours in Any other time.

Why the ring matters on a long block

On a long block the digits change every second, which is easy to ignore. The ring changes slowly and shows how much of the block is gone, at a glance. At 45 minutes, one degree of the ring is about 7.5 seconds, so you will see it move about once every few seconds. Use it with the halfway and one minute left chimes, rather than watching either.

What fits in 45 minutes

45 minutes in other units

An hour does not divide by 45, so rounds run past it: 2 rounds are 90 minutes, which is 1.5 hours. For one block and a break, use the timer here and then the 15 minute timer.

A forty-five minute plan

Divide the block into 5 minutes of warm-up, 35 minutes of the main work and 5 minutes to wrap up: 5 + 35 + 5 = 45. The halfway chime plays when 22:30 is left, the middle of the main work, and the one minute chime falls in the last minute of the wrap-up. Note where you stopped before the bell, so the next block starts in one step.

Common problems

• You stepped away for long. The alarm rings for up to a minute, then stops. If you ticked Show a notification too, a message waits for you.
• The tab was closed. Open the page again and the timer carries on from the right time. If it ended while the page was closed, it shows the time it ended.