30 Minute Timer

Counts down 30 minutes, with optional breaks. Ends at if you start now.

25:00

A thirty-minute countdown that starts with one click and rings when it finishes. It fixes the end time at the start and checks it against your clock, so a background tab, a locked screen or a busy machine will not make it lose time. No sign-up.

Half an hour is the unit calendars are built from, which makes it the easiest block to defend. Nobody questions a thirty-minute hold on a shared calendar, and a job that would take an unbounded afternoon fits into one if you make it. As a focus length it is the round number people reach for when twenty-five feels arbitrary. The cost is small but real: two thirty-minute blocks with breaks run past the hour, so they stop lining up with meetings.

What fits in 30 minutes

  • A half-hour block held on a shared calendar so nobody books over it
  • A focus session for people who dislike the odd feel of twenty-five
  • A workout with a fixed end, which is what stops it stretching or shrinking
  • Anything in the oven that does not smell different when it is done
  • A weekly review of the last seven days of work, timeboxed so it stays a review

As a pomodoro

A rounded-up pomodoro. Thirty minutes with a five-minute break is the same shape as the classic cycle, slightly longer, and it suits work with a slow start.

Four 30-minute sessions with 5-minute breaks take 2 hours 15 minutes.

Open this as a pomodoro cycle

FAQ

Is thirty minutes better than twenty-five for a pomodoro?

Better for work that takes a few minutes to load into your head, and worse for calendar arithmetic, since thirty plus a break no longer fits an hour. Try both for a week. The one you finish more often without bailing is the right one, whatever the method says.

How many thirty-minute blocks fit in a working day?

Sixteen in eight hours on paper. Realistically you will complete six to eight of genuine focus, with the rest going to meetings, messages and the recovery time between tasks. Counting completed blocks rather than scheduled ones gives you a number you can plan with.

Can I set a thirty-minute timer with a five-minute break?

Yes. Set the focus length to thirty and leave the short break at five, and the timer runs the cycle for you. Switch on auto-start breaks so the pause begins on its own, and use the copy-link button if you want to reuse or share the setup.