Free Tool · Dental Economics
Dental Chair Utilisation Calculator.
Chair-hour capacity, target utilisation and the ad-spend ceiling that fills it — before demand outruns the schedule.
By shakalakaa · 18 Aug 2026
Quick answer: Monthly chair-hour capacity = chairs × operating hours/week × 4.33 × utilisation. Multiply by revenue per chair-hour for the ceiling. Spend past that ceiling converts to a waitlist, not revenue. Enter your own figures — no defaults above zero on revenue.
FAQ
Why is chair-hour capacity the constraint dental ads should be sized against?
A dental practice cannot serve more appointments than its chairs allow. Spending past the point where demand exceeds chair-hours converts marginal spend into a waitlist, not revenue.
How is this different from the treatment-value calculator?
The treatment-value calculator models per-patient revenue driven by recall and mix. This tool models the practice-side ceiling — the chair-hours available per month at a target utilisation and the revenue that ceiling produces.
What utilisation target is honest?
Enter your own operational figure. 100% assumes zero cancellations, zero gap time and full booking density — which no real clinic sustains. Real practices track 70 to 85 percent depending on mix.
Does this account for hygienist chairs and dentist chairs separately?
No. Total operatory chairs at a blended revenue per chair-hour. If hygiene is a distinct stream, run the calculation twice or use a weighted revenue per chair-hour.