Fix Calculator
What did the outage actually cost?
The incremental impact of an outage on a pay-per-session business, after accounting for sessions still served on other equipment or recaptured later. For planning and record keeping.
Calculation method & worked example
How this is calculated
Counts must reconcile to affected demand and represent disjoint groups: a session served on other equipment is not also recaptured later. If a rescheduled visit displaced another paying visit, examine that displacement separately; neither visit is counted twice.
This tool and cost of ownership do not share entries. If you combine their results in your records, reconcile expenses and recoveries so the same economic event is counted once.
Correction, October 19, 2026: The two tools do not automatically recognize entries in each other. Reconcile combined expenses and recoveries in your own records.
lost_sessions = affected_demand − originally_served − alternatively_served − recaptured lost_contribution = lost_sessions × (price − avoided_variable_cost_per_session) net_incremental_impact = lost_contribution + incremental_outage_expenses − recoveries
Fictional worked example: 20 affected sessions − 7 served elsewhere − 5 recaptured = 8 lost. At $40 price less $5 avoided cost, contribution lost is 8 × $35 = $280. Add $120 rental + $90 added labor and subtract $50 recovery: $440 net impact.
What's kept apart
Refunds already reflected in net revenue are displayed but never added again. Unchanged membership receipts don't become lost revenue because members missed visits. Fixed rent and unchanged payroll stay outside incremental outage expense.
What's not in here
No churn assumption, no customer lifetime value, no probability that a customer left. A future churn scenario would be a separate, labeled calculation. The example is fictional.