BIZOMAT Tools · Projects
Resource Fit
Do you have enough people-hours to deliver?
Compares required effort with the team’s available hours to show utilisation and buffer.
Open the calculatorRuns in your browser. No account needed.
How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Required effort | hr | Effort estimate from the work breakdown |
| Available people | people | People assigned to the work |
| Available hours / person | hr | Net hours each person can give the project in the period |
What each input means
Open an input to see what it is, its units, the worked example and the common mistakes, with a small diagram.
What this means: Required effort
- What it is
- The total hours of work the task or project needs in the period, added up from the work breakdown or estimate.
- Units and format
- Enter a number in hr: hours. The form accepts 0 hr or more.
- Example
- The form opens with 800 hr as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- Divided by available hours to give utilisation; more required effort raises it in proportion.
- Get it right
- Include reviews, testing and rework, which are often left out of first estimates.
What this means: Available people
- What it is
- How many people are assigned and able to work on this effort during the period.
- Units and format
- Enter a number in people: people. The form accepts 1 people or more.
- Example
- The form opens with 3 people as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- Multiplied by hours per person to give total available hours.
- Get it right
- The tool assumes everyone can do any of the work; check skills separately.
What this means: Available hours / person
- What it is
- The net hours each person can actually give this work over the whole period, after leave, meetings, support duties and other projects.
- Units and format
- Enter a number in hr: hours. The form accepts 0 hr or more.
- Example
- The form opens with 300 hr as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- Multiplied by people to give capacity; more hours lowers utilisation.
- Get it right
- This is hours across the period, not per week; a full-time roster figure overstates capacity.
Method and formulas
- Capacity = people × available hours per person
- Utilisation = required ÷ capacity
- COMFORTABLE to 85%, TIGHT to 100%, OVERLOADED above
Limitations
- Treats people as interchangeable
- Ignores sequencing and skill constraints
Typical uses
- Checking a plan before committing
- Deciding whether to add people or reduce scope
Who it is for
- Project managers
- Team leaders
What you get
- COMFORTABLE, TIGHT or OVERLOADED
- Utilisation and buffer hours
Interpreting the result
- Plan at about 85% to allow for variation and unplanned work
BIZOMAT tools are screening and decision-support utilities. Verify important financial, engineering, safety, legal or operational decisions using appropriate professional standards and your organisation’s approved data.