Planner Inputs
The page uses a single main content flow. Input fields switch to three columns on large screens, two on tablets, and one on mobile devices.
Example Data Table
This sample uses the default values already loaded in the form.
| Item | Sample Value | Meaning |
|---|---|---|
| Base Project Effort | 1,200 hours | Estimated effort before buffers and coordination overhead. |
| Duration | 12 weeks | Planning window used to measure delivery pace. |
| Buffer + Overhead | 10% contingency, 8% overhead | Raises required work to 1,425.60 hours. |
| Sample Roles | PM 1, Dev 4, Designer 1, QA 2 | Represents a mixed delivery team with varied dedication. |
| Productive Capacity | 2,267.33 hours | Capacity after availability, allocation, and efficiency adjustments. |
| Estimated Completion | 7.55 weeks | Completion time at the current staffed capacity level. |
| Total Labor Cost | $135,724.80 | Estimated cost for allocated time across all roles. |
Formula Used
1) Buffered Required Effort
Buffered Required Effort = Base Project Effort × (1 + Contingency %) × (1 + Overhead %)
2) Raw Capacity per Role
Raw Capacity = Headcount × Duration Weeks × Working Days per Week × Hours per Day
3) Available Hours per Role
Available Hours = Raw Capacity × Availability %
4) Allocated Project Hours per Role
Allocated Hours = Available Hours × Project Allocation %
5) Productive Hours per Role
Productive Hours = Allocated Hours × Delivery Efficiency %
6) Total Productive Capacity
Total Productive Capacity = Sum of Productive Hours across all roles
7) Capacity Gap
Capacity Gap = Total Productive Capacity − Buffered Required Effort
8) Recommended FTE
Recommended FTE = Buffered Required Effort ÷ (Duration Window Hours × Target Utilization %)
9) Estimated Completion
Estimated Completion Weeks = Buffered Required Effort ÷ Current Weekly Productive Capacity
This model is useful for demand shaping, staffing discussions, rough budgeting, and early-stage schedule feasibility checks.
How to Use This Calculator
- Enter the base project effort in hours.
- Set the planning duration, working days, and daily hours.
- Add contingency and coordination overhead percentages.
- Define each role’s headcount, availability, allocation, efficiency, and hourly rate.
- Click Calculate Resource Plan.
- Review the result block above the form for capacity, cost, utilization, and schedule impact.
- Use the grouped bar chart to compare productive capacity with each role’s implied demand share.
- Export the result section as CSV or PDF for stakeholder review.
FAQs
1) What does this planner measure?
It estimates whether your team can deliver the planned work inside the chosen timeframe. It also shows productive capacity, labor cost, expected finish time, effective FTE, and each role’s relative contribution to delivery.
2) Why are contingency and overhead separate?
Contingency protects against uncertainty and rework. Overhead covers coordination activities like meetings, approvals, reporting, and handoffs. Keeping them separate helps you see whether risk or process burden is driving extra effort.
3) What is the difference between availability and allocation?
Availability measures how much working time a resource has after leave and other absences. Allocation measures how much of that available time is actually dedicated to this specific project.
4) What does delivery efficiency mean?
Efficiency adjusts allocated time into productive delivery time. It reflects interruptions, tool friction, ramp-up, quality loops, or other performance factors that reduce or improve the amount of useful output from scheduled hours.
5) How should I interpret the capacity gap?
A positive gap means the plan has spare productive hours. A negative gap means the team is short on capacity and may need more people, extended duration, reduced scope, or improved efficiency.
6) Does the labor cost use productive hours or allocated hours?
The cost uses allocated project hours. That is usually closer to what the project pays for, even if not every allocated hour becomes fully productive due to coordination, rework, or execution friction.
7) Can I use this for agile teams?
Yes. Enter the release or planning horizon in weeks, estimate backlog effort in hours, and model each role’s availability and allocation. The calculator then provides a quick capacity and schedule feasibility check.
8) When should I update the plan?
Update it whenever scope changes, people join or leave, availability shifts, or actual throughput differs from assumptions. Frequent refreshes keep the forecast aligned with delivery reality and improve staffing decisions.