30 Minute Timer
A 30 minute timer counts down 1,800 seconds and sounds an alarm when it reaches zero. That is 0.5 decimal hours on a timesheet, or 50% of an hour.
A thirty minute timer is half an hour, the default length of a calendar meeting and the most scheduled block of time in working life.
Paused at 30:00
Your focus time, counted and kept
A countdown tells you when the block ends. PomoTodo records that the block happened, which task it went to and what the week added up to, so a month of 30 minute blocks becomes something you can actually look at.
Free plan tracks unlimited focus time across unlimited tasks. No card required.
The 30 minute timer at a glance
| Attribute | Value |
|---|---|
| Length | 30 minutes |
| Seconds | 1,800 |
| Decimal hours | 0.5 |
| Clock format | 0:30 |
| Share of an hour | 50% |
| Fraction of an hour | 1/2 |
| Blocks per hour | 2 |
| Blocks per 8 hour day | 16 |
| Pomodoros (25 min each) | 1.2 |
| Break that pairs with it | 5 minutes |
| Decimal hours are rounded to two places, which is how payroll systems record them. Blocks per hour and per day count whole blocks only and ignore the break between them, so a working day fits fewer in practice. | |
What a 30 minute timer is used for
Meetings, workouts, cooking and half-hour work blocks.
- Meetings
- Thirty minutes is the default slot in every calendar application, and a visible countdown is the most reliable way to end one on time.
- Workouts
- Thirty minutes covers a full strength session or a moderate cardio block without a warm-down.
- Cooking and baking
- Thirty minutes is the most printed roasting and baking time on packaging.
- Deep work for beginners
- Thirty minutes is the usual step up from a twenty-five minute Pomodoro once that stops feeling like enough.
30 minutes in other units
- 30 minutes is 1,800 seconds.
- On a timesheet, it is recorded as 0.5 decimal hours.
- It is 50% of an hour, or 1/2 of one.
- 2 of them fit into one hour.
- An eight hour working day holds 16, before any break between blocks.
- Against the classic twenty-five minute Pomodoro, it is 1.2 blocks.
Converting a different length is what the minutes to decimal hours converter is for, and adding several together is what the hours calculator does.
Timers either side of 30 minutes
If 30 minutes is the wrong length, the two nearest are 25 minutes and 40 minutes.
Questions about the 30 minute timer
What is thirty minutes in decimal hours?
0.5 hours, exactly half. It is the one increment that needs no rounding on any timesheet.
How do I stop a thirty minute meeting overrunning?
Put the countdown on the shared screen. A meeting overruns because nobody in the room owns the clock, and a visible timer moves that job from a person to the wall, which removes the social cost of being the one who says time is up.