Pomodoro Session Planner
Plan your work sessions using the Pomodoro Technique — break tasks into focused intervals with short breaks.
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How to use this calculator
One full Pomodoro cycle consists of N focused work sessions separated by short breaks, followed by one long break. Remaining time after full cycles is filled with additional partial sessions.
- 1
Enter the total number of hours you have available for work today.
- 2
Adjust the focus session length, short break, and long break durations to match your preferred Pomodoro rhythm.
- 3
Set how many sessions trigger a long break (default: 4), then read how many sessions fit in your available time.
Frequently asked questions
How does the planner count sessions?
It first fits whole cycles: one cycle is N focus sessions, N − 1 short breaks and one long break, where N is the number of sessions before a long break. Remaining time then takes extra sessions, each needing a work period plus a short break between sessions but no break after the last one. Total sessions = full cycles × N + extra sessions.
How long is one cycle with the default settings?
With 25-minute sessions, 5-minute short breaks, a long break after 4 sessions and a 20-minute long break, a cycle is 4 × 25 + 3 × 5 + 20 = 135 minutes. The 25/5 pattern with a longer break after four sessions is the technique’s common convention, not a measured optimum.
What does “unscheduled leftover time” mean?
It is the time in your total that neither a session nor a planned break uses, because the remainder is too short for another session. With 4 hours and the defaults it is 20 minutes. It is shown separately so that break time reports only the breaks that are actually scheduled.
Is a long break always the last thing in a full cycle?
In the calculation, yes. Each full cycle includes its long break, so if your time ends exactly at a cycle boundary, the final long break is counted even though you may not need it. The extra sessions after the last full cycle do not include a trailing break.
Can I set the short break to zero?
Yes. A short break of 0 is used as 0, not replaced by a default. With 4 hours, 25-minute sessions, no short breaks and the default long breaks, the planner returns 8 sessions in 2 full cycles. Clearing the box gives the same result, because an emptied number box counts as 0.
What if I type decimals for the sessions before a long break?
The number of sessions before a long break is rounded to a whole number and is at least 1. Total hours may be decimal and are converted to minutes.
Does the planner schedule start and end times?
No. It returns counts and totals only. You decide when each session starts.
Is 25 minutes the right session length?
The tool does not decide that. It counts whatever length you enter. The classic 25/5/20 pattern is only the default; if you prefer longer sessions, enter 50 and 10 and see how many fit.
Pomodoro planning: cycles, extra sessions and leftover minutes
Cycles first, then extra sessions
The planner builds the schedule in two stages. It fits as many full cycles as the time allows, where one cycle ends with a long break. With the remaining time it adds more sessions, each followed by a short break except the last. That ordering means the long break is only counted when the whole cycle completes, so a day that ends partway through a cycle gets no long break in the figures.
Worked example: four hours at the defaults
With 4 hours, 25-minute sessions, 5-minute short breaks and a 20-minute long break after 4 sessions, the planner returns 7 sessions: 1 full cycle (4 sessions) plus 3 extra. Focus time is 175 minutes, scheduled break time is 45 minutes, and 20 minutes are left unscheduled. Focus is 73% of the total time. A two-hour run returns 4 sessions (100 minutes of focus, 15 minutes of breaks, 5 left over, 83%), with no full cycle completed.
More runs of the planner
The table compares runs, including an 8-hour day, a longer 50/10 pattern and a run with no short breaks. In the 3-hour 50-minute row, one full cycle of 3 sessions and a 30-minute long break would take 200 minutes, so none fits, and the planner fits 3 sessions with two 10-minute breaks instead.
| Settings (hours; work/short; N; long) | Sessions | Focus | Scheduled breaks | Leftover | Full cycles |
|---|---|---|---|---|---|
| 4; 25/5; 4; 20 (defaults) | 7 | 175 min | 45 min | 20 min | 1 |
| 2; 25/5; 4; 20 | 4 | 100 min | 15 min | 5 min | 0 |
| 8; 25/5; 4; 20 | 14 | 350 min | 110 min | 20 min | 3 |
| 3; 50/10; 3; 30 | 3 | 150 min | 20 min | 10 min | 0 |
| 4; 25/0; 4; 20 | 8 | 200 min | 40 min | 0 min | 2 |
Why the figure is lower than hours ÷ 30
Dividing the time by the 25-plus-5-minute slot overstates the number of sessions because long breaks and the leftover remainders take time. The planner counts both explicitly. The final-session rule works in your favour: because the last session needs no break after it, an extra session is counted whenever it and the preceding short breaks fit in the remaining time.
Using the numbers
Use the session count as a planning limit for the day and the leftover figure as slack. If leftover time is large, a slightly shorter session or break may fit one more session; if it is zero, the day is fully planned. The tool does not know how demanding the work is, so shorten or lengthen the sessions to match the task.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →