The Weekly Project Calculator converts a project estimate and weekly progress into a simple pace forecast. Enter total estimated effort, completed effort, effort completed this week, weekly capacity, and weeks until the target. The calculator reports completion percentage, remaining effort, forecast weeks at the current pace, and the weekly pace required to meet the target.
This view helps distinguish overall project status from recent momentum. A project can be far along but moving too slowly for the remaining deadline, or early in its lifecycle but progressing at a sustainable rate. The forecast assumes future throughput resembles the current week and that the effort estimate remains stable. Scope changes, blocked work, and uneven phases can materially change the actual finish date.
Forecast project progress
hours
hours
hours
hours/week
weeks
Result
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hours remaining
Project completion—
Remaining effort—
Forecast at current pace—
Required weekly pace—
1. Enter total effort Use the latest approved estimate for the entire project.
2. Record completed effort Enter the portion finished to date using the same unit.
3. Capture current pace Use effort completed during the most recent representative week.
4. Add weekly capacity and target Enter the capacity reserved for the project and the weeks remaining.
5. Compare forecasts Review current-pace duration against the weekly pace required by the target.
Remaining effort = Total estimated effort − Completed effort
Completion (%) = Completed effort ÷ Total estimated effort × 100
Forecast weeks = Remaining effort ÷ Current weekly pace
Required weekly pace = Remaining effort ÷ Weeks until target
What the result means
The main result is the estimated effort still required to complete the project.
Forecast weeks use this week’s completed effort as the continuing pace and may be unstable when weeks vary widely.
Given: 240 total hours, 120 completed hours, 24 hours completed this week, 30 hours weekly capacity, and 5 weeks to target.
Calculation: Remaining = 240−120 = 120 hours. Completion = 50%. Forecast = 120÷24 = 5 weeks. Required pace = 120÷5 = 24 hours per week, equal to 80% of capacity.
Result: The project is 50% complete and exactly on pace for the five-week target under the current estimate.
What if the total estimate changes?
Update the total and completed effort together so they remain comparable.
Should I use hours or story points?
Either can work if total, completed, weekly pace, and capacity all use the same unit.
What if this week was unusual?
Use an average of several representative weeks as the current pace.
Does forecast time include waiting and approvals?
Only if those delays are represented in the pace or effort estimate.
How is this different from a deadline planner?
This calculator focuses on cumulative project progress and pace, while a deadline planner tests near-term capacity against a defined work estimate.