Estimate operating room room utilization with inputs that match day-to-day operating room operations. The calculator keeps workload, available capacity, and operational assumptions visible, so you can test a baseline and then change one driver at a time. Results are planning estimates: use locally observed rates and apply clinical, labor, safety, and scheduling requirements before making an operational decision.
Available room-hours = rooms × scheduled hours per room
Total utilization = (patient-occupied hours + turnover hours) ÷ available room-hours × 100
Clinical utilization excludes cleaning and setup time.
Total utilization shows how much scheduled room capacity is consumed by patient care plus necessary changeover work.
Planning estimate only. Validate assumptions against local policy, staffing rules, equipment constraints, case mix, and patient-safety requirements.
With 6 rooms open 10 hours each, capacity is 60 room-hours. Adding 42 occupied hours and 8 turnover hours gives 50 used hours.
50 ÷ 60 × 100 = 83.3%
It can count in total operational utilization because the room is unavailable, while clinical utilization is reported separately.
Yes, but it usually signals overtime, overlapping periods, borrowed capacity, or inconsistent input periods that should be checked.
Use the same period for available hours, occupied hours, and turnover hours—such as one day, week, or month.
No. Uneven demand, emergency reserves, maintenance, and specialty restrictions can leave capacity unusable at particular times.
Separating them makes the available room-hours transparent and supports changes in either schedule length or room inventory.
| Input | What to enter |
|---|---|
| Available rooms | rooms; allowed range 1–200 |
| Scheduled hours per room | hours; allowed range 0.25–24 |
| Procedure time used | room-hours; allowed range 0–480 |
| Turnover time used | room-hours; allowed range 0–480 |