THE NUMBERS, EXPLAINED
How to use this calculator.
Enter already-unioned booking and closure durations for one facility. Bookings must be wholly outside closure intervals; this is an occupancy measure, not player capacity.
Start with your inputs
Enter total facility opening hours (hours), closure time within opening hours (hours), non-overlapping booked playable hours (hours). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Total facility opening hours (hours) | 100 |
| Closure time within opening hours (hours) | 20 |
| Non-overlapping booked playable hours (hours) | 60 |
A worked example
With the example inputs above, playable hours (hours) is 80. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Playable hours (hours) | 80 |
| Booked utilization (%) | 75 |
| Unused playable hours (hours) | 20 |
How this is calculated
Playable hours (hours)
Subtract closures from opening hours.
Booked utilization (%)
Divide booked playable hours by playable hours.
Unused playable hours (hours)
Subtract bookings from playable capacity.
Symbols and units
- a
- Total facility opening hours (hours)
- b
- Closure time within opening hours (hours)
- c
- Non-overlapping booked playable hours (hours)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Enter already-unioned booking and closure durations for one facility. Bookings must be wholly outside closure intervals; this is an occupancy measure, not player capacity.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Playable hours (hours); Booked utilization (%); Unused playable hours (hours). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Enter already-unioned booking and closure durations for one facility. Bookings must be wholly outside closure intervals; this is an occupancy measure, not player capacity.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax Prealgebra 2e — arithmetic and proportions ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →