Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Project Management
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.
Fill in the required fields to see your result.
Project Management
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.
Fill in the required fields to see your result.
Key differences
| Critical Path Duration Calculator | Project Duration Calculator | |
|---|---|---|
| Category | Project Management | Project Management |
| Inputs required | 3 | 3 |
| Result | Critical Path Duration (days) | Project Duration (days) |
| What it does | 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. |