How to use the billable utilization calculator
Utilization is billable hours divided by total working hours. Only hours actually billed to a client belong in the numerator, while internal meetings, training, proposal writing and interviews stay in the denominator alone. That asymmetry is the point: a genuinely busy month can still post a low utilization figure, and that is information worth having.
Total working hours come from hours per week multiplied by the number of weeks measured. Both are inputs, so 40 and 13 give a quarter and 40 and 52 reproduce the familiar 2,080-hour year. The result label repeats the exact figures used, so there is never any doubt about what the denominator was. Target utilization is an input too, because the right target differs sharply between an agency, a consultancy and an internal platform team.
Hours needed for target is total working hours times the target, and the difference against actual billable hours is labeled as short of target or above target depending on which way it falls. If billable hours exceed total working hours the tool stops and asks you to raise the weekly hours instead of silently capping the rate at 100%.
Frequently asked questions
Hours per week multiplied by the number of weeks in the period. Both are inputs, so enter 40 and 13 for a quarter at a 40-hour week, or 40 and 52 to reproduce the familiar 2,080-hour year. The label repeats the exact numbers used.
They stay in total working hours but never enter billable hours. Because they sit in the denominator only, non-billable work pushes utilization down, which is exactly what the metric is meant to reveal.
That means billable hours exceed total working hours, so the calculation stops and shows a notice instead. To account for overtime, raise hours per week to the hours actually worked and run it again.