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Utilization rate

Measure billable time as a share of available hours and see the gap to target.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

hours
hours
%
Results update as you type. The formula and assumptions are explained below the calculator.

Utilization rate

65.0%

Billable hours26 hours
Non-billable hours14 hours
Billable hours needed for target28 hours
Hours short of target2 hours

Estimate only. It reflects the period entered; leave, public holidays and internal projects should be reflected in available hours.

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How to calculate utilization

Compare billable hours with the capacity available.

1

Enter billable hours

Count hours worked on client projects that can be invoiced.

2

Enter available hours

Use contracted or scheduled hours for the same period.

3

Set a target

Choose a realistic target by role and compare the gap in hours.

What does this tool do?

Utilization rate compares billable hours with the hours available to work. It is a core services metric because unused capacity is a cost that cannot be recovered, while unrealistic targets can push people into overtime.

The Formula

Utilization rate = Billable hours ÷ Available hours × 100

Frequently Asked Questions

What is the difference between utilization and billability?

Utilization measures billable time against available time. Billability can be narrower, counting only hours actually invoiced to clients, so utilization is often slightly higher.

Should utilization targets be the same for everyone?

No. Delivery staff can sustain higher targets than people with sales, management or training responsibilities. Apply role-specific targets and review them for burnout risk.