Capacity KPI calculator
Compare billable hours with available hours, see utilization percentage, and check how many billable hours are needed to reach a target rate.
Formula
Utilization rate measures how much available work capacity became billable or otherwise productive time. Use the same reporting period for billable hours and available hours.
utilization rate = billable hours / available hours x 100
non-billable hours = available hours - billable hours
billable hours needed = available hours x target utilization rate
Examples
These examples show why utilization rate is most useful when the role, period, and definition of billable work stay consistent.
| Scenario | Input | Result | Interpretation |
|---|---|---|---|
| Consultant week | 30 billable hours / 40 available hours | 75% utilization | Shows the share of weekly capacity used for billable client work. |
| Agency team | 310 billable hours / 400 available hours | 77.5% utilization | Useful for staffing reviews when the team definition of available hours is stable. |
| Target planning | 40 available hours x 80% target | 32 billable hours needed | Helps translate a utilization target into a weekly billable-hours target. |
Method
Decide whether available hours include PTO, holidays, training, internal meetings, or only scheduled working capacity.
Do not compare weekly billable hours with monthly capacity. Keep the denominator and numerator in the same time window.
High utilization can still be unhealthy if it creates rushed work, poor documentation, rework, or burnout.
Non-billable hours are not automatically wasted. Admin, sales, training, documentation, and support may be necessary.
Method and limitations
Utilization rate is common in consulting, agencies, professional services, healthcare, and other capacity-based teams. It should be reviewed with role expectations, workload mix, quality, scheduling constraints, and whether non-billable work is required.
This calculator provides planning math only. Use your organization's definitions before using utilization rate for staffing, compensation, discipline, or client reporting.
FAQ
Divide billable hours by available hours and multiply by 100. For example, 30 billable hours divided by 40 available hours equals a 75% utilization rate.
Not exactly. Utilization rate focuses on how available time was used, usually billable time. Productivity can compare output with time, cost, targets, or other inputs.
A good utilization rate depends on the role and business model. A high target may work for client delivery roles but may be unrealistic for roles with sales, training, support, or management duties.
No. Non-billable hours can include necessary work such as documentation, meetings, training, sales support, internal operations, and quality control.
Multiply available hours by the target utilization rate written as a decimal. For example, 40 available hours at a 75% target requires 30 billable hours.
Compare capacity use with output and goal completion before interpreting a utilization result.