Chair Downtime Calculator

How the chair downtime math works

The model is deliberately simple, because the inputs that matter are yours. Short days per month times chair hours lost per short day gives the idle hours. Idle hours times your production per chair hour gives the gross production at risk. The recovery rate discounts that for appointments you genuinely rebook, and temp coverage converts lost days into covered days that keep their production and cost the temp rate instead.

The number payroll never shows

A dark chair does not show up as a cost on any report. Payroll may even look better that month. The loss is production that never happened, which is why practices consistently underestimate it, and why putting your own production figure on idle hours changes how urgently coverage gets fixed.

The two levers

Fewer short days and faster recovery. Fewer short days comes from attendance expectations, time off rules that protect coverage, cross-training, and a temp bench you can actually call. Faster recovery comes from a rebooking procedure that starts the moment a gap appears instead of after the day is lost. Both are policy and process problems, which is good news, because policy and process are fixable.

Where the model is honest about its limits

It does not model the downstream cost of compressed schedules, recall slippage, or patients who quietly leave for a practice that could see them sooner. It also depends entirely on the production and recovery figures you enter. If anything, a careful version of this number understates the real cost of routine chair downtime.

What counts as chair downtime?

Hours a chair or column sits unstaffed and unproducing because of a staffing gap: a call-off with no coverage, an unfilled vacancy day, or a schedule hole you could not shuffle around. It does not include downtime you chose, like admin time or planned light days.

Where do I find my production per chair hour?

Your practice management software. Run a production by provider or production by operatory report for the last few months and divide by scheduled chair hours. Production varies so much between practices that no published benchmark substitutes for your own number, which is why this calculator ships with a placeholder instead of a claim.

Is rebooking really recovery?

Partly. A patient who rebooks within the period delays production rather than losing it, which is why the recovery input discounts the gross figure. But rebooking compresses future schedule capacity, and some patients never rebook. If your recall is already full, set recovery low, because there is nowhere to put the displaced visits.

Does temp coverage pay for itself?

Compare the temp day rate against the net production a covered day preserves. If a short day loses 1,400 dollars of net production and a temp costs 600 dollars, coverage is an easy yes. The calculator runs that math for you in the breakdown when you fill in the temp inputs.

Is this a discipline tool?

No. It prices a scheduling and coverage problem so you can justify fixing it. The absence behind a gap may be legally protected leave, and the answer to chair downtime is coverage planning, cross-training, and realistic staffing, not pressure on whoever was out.