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Downtime Cost Calculator

Estimate the revenue lost during a service outage.

Inputs

Saved Scenarios

— select 2+ to compare

Estimated Downtime Cost

$10,000.00

Spark says

How it's calculated

Formula

Cost=Revenue per Hour×Downtime HoursCost = Revenue\ per\ Hour \times Downtime\ Hours
Revenue\ per\ Hour
— Average revenue generated per hour of normal operation

What is the Downtime Cost Calculator?

This calculator gives a simple lost-revenue estimate for an outage — a common input for building the business case for reliability investment (uptime SLAs, redundancy, incident response).

How to use it

  1. 1 Enter your average revenue per hour of normal operation.
  2. 2 Enter how long the outage lasted (or is expected to last).

Worked examples

$5,000/hr revenue, 2-hour outage

About $10,000 in lost revenue.

Try it

Limitations

  • •Only counts direct lost revenue — doesn't include reputational damage, SLA penalties, support costs, or customer churn, which are often larger in practice.

Frequently asked questions

Should I use total revenue or just revenue from the affected service?

Use revenue attributable to whatever the outage actually affects — if only checkout is down, use checkout revenue per hour, not total company revenue.