Critical Path Duration Calculator vs Project Duration Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Critical Path Duration Calculator
Sum the durations of three sequential tasks to estimate critical-path duration. Use it for very simple linear project sizing or as an introduction to the critical-path concept — for real projects with branching dependencies, use proper CPM software.
- Answers
- Critical Path Duration (days)
- Inputs
- Task 1 Duration, Task 2 Duration, Task 3 Duration
Project Duration Calculator
Estimate total project duration in days by dividing total work (tasks × average duration) by the number of tasks that can run in parallel. Use it for rough early-stage project planning, capacity-vs-deadline checks, or sprint capacity estimation in agile teams.
- Answers
- Project Duration (days)
- Inputs
- Total Tasks, Average Task Duration, Tasks in Parallel
At a glance
| Critical Path Duration Calculator | Project Duration Calculator | |
|---|---|---|
| Category | Project Management | Project Management |
| Answers | Critical Path Duration | Project Duration |
| Inputs | 3 | 3 |
| Result unit | days | days |
When to use each
Sum the durations of three sequential tasks to estimate critical-path duration. Use it for very simple linear project sizing or as an introduction to the critical-path concept — for real projects with branching dependencies, use proper CPM software.
Estimate total project duration in days by dividing total work (tasks × average duration) by the number of tasks that can run in parallel. Use it for rough early-stage project planning, capacity-vs-deadline checks, or sprint capacity estimation in agile teams.