Network MonitoringOperational risk

IT Downtime Cost Calculator

Estimate the annual cost of outages by combining lost employee productivity and revenue impact per hour.

Quick answer: This it downtime cost calculator helps buyers estimate the operational impact, savings potential, or first-year return behind a software decision before vendor pricing and sales narratives frame the business case for them.

Use it to pressure-test assumptions, compare scenarios, and build a more grounded business case before shortlist conversations drift into abstract vendor claims.

Live calculator

Adjust the assumptions

Example scenario

Regional services business

A mid-sized IT team sees about six notable outages per year, each lasting around 90 minutes, with 65 employees disrupted and meaningful client work delayed.

Why this calculator matters

Teams often talk about uptime in technical terms but struggle to explain what an hour of downtime really costs the business.

This calculator helps justify monitoring, alerting, redundancy, and incident response investment before the next outage becomes the business case.

It also gives procurement and leadership a common number to use when comparing monitoring tools against status quo risk.

Context and practical use

Use this when your team is evaluating network monitoring, observability, or incident-response improvements and needs a simple business-impact estimate.

The model is intentionally practical rather than finance-perfect. It combines direct labor disruption and revenue exposure because those are the two numbers buyers can usually estimate fastest.

Formula and assumptions

  1. 1

    Annual downtime hours = incidents per year × average hours per incident

  2. 2

    Annual productivity loss = annual downtime hours × affected employees × average hourly employee cost

  3. 3

    Annual revenue loss = annual downtime hours × revenue impact per hour

  4. 4

    Annual downtime cost = productivity loss + revenue loss

Inputs this model expects

The inputs stay intentionally practical so teams can use the calculator early in the buying process and refine the assumptions later if needed.

Incidents per year

How many notable outages or service interruptions happen in a year.

Default starting value: 6

Average hours per incident

hrs

Average business-impacting duration for each outage.

Default starting value: 1.5 hrs

Affected employees

Rough number of employees whose work is disrupted during the outage.

Default starting value: 65

Hourly employee cost

$

Blended hourly cost for employees affected by the outage.

Default starting value: 45 $

Revenue impact per hour

$

Estimated revenue or customer impact per hour of downtime.

Default starting value: 3500 $

Related calculators

Use these next if you want to pressure-test adjacent parts of the business case instead of relying on one number alone.

Frequently asked questions

Should downtime cost include both labor and revenue?

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Usually yes. Labor disruption shows the internal productivity hit while revenue impact reflects customer-facing or billable work loss. Using both creates a more defensible planning number.

Is this meant to replace a formal business continuity model?

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No. It is a decision-support estimate meant to help buyers size the problem and compare monitoring or resilience investment against a realistic operational baseline.