Free tool
Downtime cost calculator
An order of magnitude, calculated from your own numbers, to see what an hour of downtime means for you.
Sources reviewed on
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Indicative estimate based only on what you enter: it does not account for reputational damage, long-term customer loss or regulatory consequences. Your numbers never leave your browser. For a reliable value, a business impact analysis remains the right method.
Public cost benchmarks
Public benchmarks, by industry, and real incidents to give a concrete sense of what's at stake.
By industry
Real incidents
Amazon — Prime Day 2018
An outage of roughly 75 minutes during the year's busiest sales event.
Analyst estimates: from $90M to over $99M US in lost sales, about $1.2M US per minute. [6]
TSB — botched migration
Banking services disrupted for months after an IT migration.
£48.65m fine; total costs estimated by the bank at over £330m.
Read the case studyColonial Pipeline — ransomware
5,500 miles of pipeline shut down for 6 days, as a precaution.
$4.4M US ransom paid, plus fuel shortages along the whole East Coast.
Read the case studyMarks & Spencer — cyberattack
Online orders suspended for about 7 weeks.
Impact estimated at about £300m off annual profit.
Read the case studyChange Healthcare — ransomware
Billing exchange disruption affecting most of the US healthcare system.
$22M US ransom paid, without preventing a second extortion attempt.
Read the case studyCrowdStrike / Delta — global outage
About 8.5 million Windows devices down on the same day.
Delta reports about $500M US in costs for 5 days of disruption.
Read the case studySouthwest Airlines — operational meltdown
16,900 flights cancelled and over two million passengers stranded over the 2022 holidays, after a winter storm.
Over $600M US in refunds and reimbursements, and a $140M US DOT penalty ($35M of it in cash): over $750M US in total, per the DOT. [5]
These figures come from public surveys and analyses and vary with the calculation method used (lost revenue, productivity, penalties, reputation). They give an order of magnitude, not a number to apply directly to your organization: the best way to know your own hourly cost is a business impact analysis.
Sources
- ITIC — 2024 Hourly Cost of Downtime Report
- Atlassian — Cost of downtime (citing Gartner, 2014)
- Pingdom — Average Cost of Downtime per Industry
- Acronis — How unplanned OT downtime is draining industrial profits (citing Siemens, True Cost of Downtime 2024)
- U.S. Department of Transportation — DOT penalizes Southwest Airlines $140 million for 2022 holiday meltdown
- TechCrunch — What Amazon lost (and made) on Amazon Prime Day