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Workforce Utilisation Calculator

Work out workforce utilisation instantly with clear inputs, formula shown and shareable results.

About Workforce Utilisation Calculator

Utilisation is billable hours over available hours, and the gap to target expressed in hours is what makes it actionable. Reporting total productive time alongside it prevents the perverse incentive to stop doing valuable internal work simply because it is not billable.

Formulas

Utilisation

Utilisation % = Billable hours / Available hours x 100

Hours to target

Gap = Available hours x Target % - Billable hours

Worked example

With the default values below, Workforce Utilisation Calculator returns Utilisation rate of 77.17%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Billable or productive hours
1,420
Available working hours
1,840
Non-billable but productive hours
180
Target utilisation
80

Results

Utilisation rate
77.17%
Total productive rate
86.96%
Variance against target
-2.83%
Additional billable hours needed
52.0

Step by step

  1. 1Values used
  2. 2Utilisation
  3. 3Hours to target
  4. 4Utilisation rate= 77.17
  5. 5Total productive rate= 86.96
  6. 6Variance against target= -2.83
  7. 7Additional billable hours needed= 52.0

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What utilisation is realistic?

70-80% for consultants and 85-90% for delivery-focused engineers. Above 90% leaves no capacity for training, sales support or recovery from disruption.

Is 100% utilisation the goal?

No. A fully utilised workforce cannot absorb a new project, invest in capability, or handle an unplanned absence.

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