Task Effort Distribution Calculator

Calculator Inputs

Enter global planning settings and task drivers. Use one line per task in the required comma-separated format.

Total available effort

Effort unit

Buffer percentage

Minimum effort per task

Decimal precision

Scoring method

Complexity weight

Priority weight

Risk weight

Dependency weight

Uncertainty weight

Task lines

Line format: Task Name, Complexity 1-10, Priority 1-10, Risk 0-100, Dependency 0-100, Confidence 1-100

Example data table

You can paste the sample below directly into the task lines field.

Task	Complexity	Priority	Risk %	Dependency %	Confidence %
Planning	4	5	10	5	90
Research	6	7	20	10	80
Design	7	8	15	20	75
Development	9	9	25	25	65
Testing	6	8	15	10	85
Review	5	6	10	5	95

Formula used

1) Driver factors

Risk factor = 1 + (Risk % / 100)

Dependency factor = 1 + (Dependency % / 100)

Uncertainty factor = 1 + ((100 - Confidence %) / 100)

2) Weighted Product method

Score = Complexity^wc × Priority^wp × RiskFactor^wr × DependencyFactor^wd × UncertaintyFactor^wu

3) Weighted Sum method

Score = (Complexity × wc) + (Priority × wp) + (RiskFactor × 10 × wr) + (DependencyFactor × 10 × wd) + (UncertaintyFactor × 10 × wu)

4) Final allocation

Available effort = Total effort × (1 − Buffer %)

Extra pool = Available effort − (Minimum effort × Number of tasks)

Task effort = Minimum effort + (Task score / Total scores) × Extra pool

How to use this calculator

Enter your total available effort and choose the working unit.
Reserve a realistic buffer for interruptions, meetings, and rework.
Set a minimum effort floor if every task needs baseline attention.
Choose a scoring method and adjust the driver weights.
Paste task lines using the required six-field format.
Click Calculate Distribution to show results above the form.
Review the table, alerts, and graph, then export CSV or PDF.

Frequently asked questions

1) What does this calculator distribute?

It spreads a fixed pool of effort across tasks using complexity, priority, risk, dependency, and confidence. The result helps build fairer plans than simple equal splits.

2) When should I use the Weighted Product method?

Use it when tasks compound each other. A task that is both difficult and risky should rise faster in allocated effort than a basic additive model.

3) When is the Weighted Sum method better?

Use it for gentler ranking. It is easier to explain to stakeholders because every driver adds directly to the task score instead of multiplying.

4) Why include a buffer percentage?

Buffers protect your schedule from meetings, context switching, defects, blockers, and estimation gaps. Without a buffer, plans often look precise but fail in delivery.

5) What does confidence change in the result?

Lower confidence increases uncertainty, which raises the task score. That helps early-stage or poorly defined work receive more effort space.

6) Can I use points instead of hours?

Yes. The calculator supports hours, days, and points. The math stays the same because it distributes proportions, not just clock time.

7) Why set a minimum effort per task?

A minimum floor prevents very small tasks from getting unrealistically tiny allocations. It is useful when every task still needs setup, review, or coordination.

8) Can this replace full project estimation?

No. It improves task distribution inside a plan. You should still validate scope, dependencies, capacity, deadlines, and assumptions with normal estimation practice.