Pomodoro Session Planner
Plan your workday with the Pomodoro Technique.
Calculate focus sessions, total deep work time, and your optimal break schedule.
How It Works
The Pomodoro Technique was developed by Francesco Cirillo in the late 1980s while he was a university student. He used a tomato-shaped kitchen timer (“pomodoro” is Italian for tomato) to break his study sessions into 25-minute focused intervals. The method became one of the most widely adopted time-management systems in the world.
Why 25-minute intervals work: Research on attention span and cognitive load shows that the human brain can sustain deep focus for roughly 20–50 minutes before performance begins to drop. Short, structured intervals exploit this natural rhythm — you work intensely for a fixed period, then reward your brain with a short rest. This prevents the “slow drift” where you’re technically at your desk but mentally elsewhere.
The classic Pomodoro cycle:
- Work for 25 minutes (one “pomodoro”)
- Take a 5-minute short break
- After 4 pomodoros, take a 15–30 minute long break
- Repeat
How this calculator works: Each full cycle = (pomodoro duration × pomodoros per long break) + (short breaks × (pomodoros per long break − 1)) + one long break. The calculator fits as many complete cycles as possible into your available time, then fills the remaining time with additional partial or complete pomodoros.
Total deep work time = pomodoro duration × total number of completed pomodoros.
Adapting the technique: The 25/5 ratio is not sacred. Many people use 50/10 (for deep analytical work), 90/20 (matching ultradian cognitive rhythms), or 52/17 (popularized by a DeskTime productivity study). This calculator lets you customize all intervals to match your own rhythm and task type.
| System | Work | Short Break | Long Break | Best For |
|---|---|---|---|---|
| Classic Pomodoro | 25 min | 5 min | 15 min | Most tasks |
| 52-17 Rule | 52 min | 17 min | 30 min | Office work |
| 90-Minute Blocks | 90 min | 20 min | 30 min | Deep creative work |
| Short Bursts | 15 min | 5 min | 10 min | ADHD, beginners |
Pro tips:
- Write down what you’ll work on before each pomodoro. Vague sessions waste the interval.
- Protect your pomodoro — if interrupted, note the interruption and return to focus.
- Use the long break for movement, not screens.
- Track completed pomodoros — the count itself becomes motivating.