What is staff and diary utilisation?
It compares booked appointment hours with the appointment hours your team makes available. It can be reviewed for the whole business or alongside individual schedules.
Free Calculator
How much of your bookable diary is being used?
Compare booked appointment hours with the time your team makes available for services. Use the same period for every input and allow for breaks and non-appointment work.
- No account needed
- Calculate from your own figures
Your figures
Estimate diary utilisation
Results update in your browser as you change the figures. Use estimates if you do not have exact records.
Your estimate
Estimated diary performance
Results update in your browser as you change the figures. Use estimates if you do not have exact records.
Total available appointment hours per week
Booked hours per week
Unused appointment capacity per week
Diary utilisation
Current estimated appointment revenue per week
Potential value of currently unused capacity per week
Current estimated annual appointment revenue
Potential annual appointment capacity at 100%
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Practical guide
Using diary utilisation as a planning measure
Utilisation can help explain how available team time is being used, but it should be considered alongside service quality and operational flexibility.
How to calculate diary utilisation
Divide booked appointment hours by available appointment hours and multiply by 100. Use consistent weekly figures and exclude hours that were never intended to be bookable.
What causes unused appointment capacity?
Demand, seasonal patterns, late cancellations, team schedules, service duration and how clearly availability is published can all affect unused capacity.
Why 100% utilisation is not always the goal
Appointment businesses need room for breaks, administration, cleaning and setup, overruns, team development, unexpected events and operational flexibility.
Online booking and diary availability
Online booking can let customers see suitable available times without calling, including outside opening hours. Availability should still reflect real schedules and buffers.
Planning recruitment and capacity
Utilisation trends can add context when considering recruitment, opening hours or additional locations. Use a representative period rather than one unusually busy or quiet week.
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Staff & Diary Utilisation Calculator questions
Useful guidance for interpreting your estimate without unsupported averages or guarantees.
Divide the team’s booked appointment hours by its total bookable hours for the same period, then multiply by 100. For two people with 30 bookable hours each and 45 hours booked in total, utilisation is 75%.
Not necessarily. Businesses need appropriate time for breaks, administration, cleaning, setup, overruns, development and unexpected events.
Use a recent representative week or a weekly average from a longer period. Consider seasonality when interpreting the result.
This calculator models a diary up to 100% of its entered capacity. If booked hours exceed available hours, the result uses the available-hours total. Check the inputs and any overlapping appointments; the calculator is not showing over-capacity hours.
No. The displayed amount is the potential value of currently unused capacity, not a guarantee that the time could have been booked.
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