How to estimate downtime cost
The simplest downtime cost formula is revenue per hour multiplied by downtime hours. If a service handles $1,000 per hour and is down for 8.76 hours in a year, the revenue at risk is $8,760.
That number is intentionally blunt. It does not include support load, refunds, churn, SLA credits, engineer time, brand damage, or the customers who leave without opening a ticket. For many businesses, the direct revenue loss is only the visible part.
Revenue loss versus margin loss
Revenue at risk is useful when you want the headline number. Margin adjusted loss is useful when you want the financial impact after the cost of goods sold. Both can be valid; they answer different questions.
Executives usually care about the total business impact. Finance may care about margin. Engineers need a number large enough to justify the monitoring, redundancy, and incident response work that prevents the next outage from lasting longer than it should.
The cheapest outage is the one you catch early
Monitoring does not prevent every failure. It shortens the time between failure and action. If an alert arrives after one minute instead of after a customer complaint, the cost curve changes.
PingPane watches websites, APIs, and certificates continuously, then gives you the incident history and public status page to explain what happened.