How the Downtime Cost Calculator Works
This downtime cost calculator estimates the two direct costs every outage creates: the time your people can’t work, and the sales you can’t make. It uses the numbers you enter above:
- Lost employee productivity = number of employees × average hourly cost per employee × the percentage of staff who can’t work × the length of the outage.
- Lost revenue = revenue per hour × the length of the outage. Leave it at zero if an outage doesn’t stop you from taking orders.
- Cost of a single outage = lost productivity + lost revenue. Multiply that by your outages per year to get the annual estimate.
Use a fully loaded hourly cost per employee (wages plus benefits and payroll taxes) for the most realistic result, and be honest about how many people are truly idle when email, files or your line-of-business application are unavailable.
A Worked Example
Here’s how the math plays out for a hypothetical 20-person office. These are illustrative numbers, not benchmarks, so plug in your own above.
If the average fully loaded cost per employee is $40 an hour and 75% of staff can’t work during an outage, lost productivity is 20 × $40 × 75% = $600 for every hour systems are down. If the business also brings in $500 an hour in sales it can’t process, the total is $1,100 per hour.
A four-hour outage would then cost about $4,400. Three outages like that in a year adds up to roughly $13,200, before counting any of the hidden costs below. Running your own figures through the downtime cost calculator is the quickest way to see whether prevention is worth the investment.
What the Estimate Doesn’t Include
The calculator deliberately stays conservative. It doesn’t count overtime spent catching up, missed deadlines, the cost of recovering or recreating lost data, regulatory exposure for healthcare and financial businesses, or the damage an outage does to customer trust. For most businesses the real number is higher than the one shown.