Pomodoro Session Calculator
Project hours → number of pomodoros, total clock time, long-break count — Pomodoro Technique by Francesco Cirillo.
Result
- Project work hours8.00 hr
- Pomodoros required20
- Short breaks15 × 5 min = 75 min
- Long breaks4 × 15 min = 60 min
- Total clock time10.58 hr (635 min)
- Focus efficiency (work / total)78.7%
- Workdays needed (at 8 poms/day)2.50 days
- Cycle structure4 poms → long break (Cirillo classic)
Step-by-step
- Pomodoros = ceil(project_hrs · 60 / pom_minutes) = ceil(480.0 / 25) = 20.
- Long breaks = floor((20 − 1) / 4) = 4.
- Short breaks = 20 − 1 − 4 = 15.
- Total clock = 20·25 + 15·5 + 4·15 = 635 min = 10.58 hr.
How to use this calculator
- Estimate the project work hours (focused work, not calendar time).
- Keep Cirillo defaults unless you have a personal-experience-driven reason to change them.
- Set "pomodoros per day" honestly — start at 6 and only raise if you sustain it without burnout.
- The "workdays needed" line lets you set a realistic deadline.
About this calculator
The Pomodoro Technique (Francesco Cirillo, late 1980s) breaks work into 25-minute focused sessions separated by 5-minute short breaks; after every 4 pomodoros take a 15-30-minute long break. The technique is most useful for tasks where context-switching cost is high or where motivation is the main bottleneck — coding, writing, studying, deep research. The compounding effect of short breaks isn't just rest: it forces an explicit commit point ("am I still working on the right thing?") that pure-flow work skips. This calculator answers two related questions: (1) given a project estimate, how many pomodoros does it cost, and how much CLOCK time does that translate to (work + breaks)? (2) over how many work days does that translate at a sustainable pace? 6-8 pomodoros per day is the typical sustained-focus ceiling. 12+ is achievable for short sprints but burns out within a week.