Downtime Cost Tool

Cost of Downtime Calculator

Enter your revenue, industry, team size, SLA tier and outage length to get a defensible cost of downtime: per minute, per hour, and as annual exposure. Eight inputs, real benchmark data, no sign-up and no lead capture.

The short answer

ITIC's 2024 survey found 91% of mid-size and large enterprises lose more than $300,000 per hour of downtime, and 40% of large enterprises lose $1M to $5M per hour. Your own number depends on revenue density, industry at-risk percentage, and workforce. Use the calculator below to get a figure you can take to your CFO.

Your Business

$

Churn risk is the hidden lever; SLA commitments trigger credits; B2B trust erosion

This outage would cost you

$8.9K
Per minute: $149Per hour: $8.9K

Cost Breakdown

Lost Revenue$742 (9%)
Lost Productivity$6.8K (82%)
Recovery Cost$603 (7%)
Reputation / Churn$134 (2%)

Includes 8% regulatory/compliance multiplier for SaaS

Annual SLA Exposure

Expected downtime/year

8.8 hrs

(526 min) at 99.9% SLA

Annual downtime exposure

$78.3K

per year at this rate

Industry Benchmark Comparison

SaaS average (ITIC 2024)

$80.0K/hr

vs

Your calculated rate

$8.9K/hr

Your cost is below the SaaS benchmark - typical for lower revenue density.

SLA credits won't cover this.

See how AWS, Azure, and GCP credit rules work against you.

SLA Credit Math

How the calculation works

Formula: Total = (Lost Revenue + Productivity Loss + Recovery Cost + Reputation Cost) x Compliance Multiplier

Lost Revenue = (annual revenue / operating hours) x industry at-risk % x outage hours. Finance sits near 98% at-risk; SaaS nearer 65%.

Productivity Loss = affected employees x fully-loaded hourly cost x industry productivity-loss % x outage hours.

Recovery Cost is estimated at 8% of direct costs (overtime, vendor escalation, post-mortem labor).

Reputation / Churn is modeled as a share of lost revenue based on customer lifetime-value sensitivity by industry.

Sources: ITIC 2024, Uptime Institute 2025, Ponemon 2022. Full methodology.

Frequently Asked

How do you calculate the cost of downtime?
Downtime cost = Lost Revenue + Lost Productivity + Recovery Cost + Reputation/Churn Cost, multiplied by an industry compliance factor. Lost Revenue is annual revenue divided by operating hours, times an industry at-risk percentage and the outage length. Lost Productivity is affected employees times fully-loaded hourly cost times a productivity-loss percentage. Recovery is estimated at 8% of direct costs and reputation cost is modeled as a share of lost revenue.
What is the average cost of downtime per hour?
ITIC's 2024 survey found 91% of mid-size and large enterprises lose more than $300,000 per hour, and 40% of large enterprises lose $1M to $5M per hour. The Gartner $5,600-per-minute figure dates from 2014 and understates current costs for most organizations.
Is this calculator free and does it require sign-up?
Yes. It runs entirely in your browser, is free, and needs no email. Nothing you enter is sent to a server or stored, so you can model real revenue figures without lead capture.
What inputs does it need?
Eight: annual revenue, industry, affected employees, average fully-loaded hourly cost, customer count, SLA tier, outage duration in minutes, and a business-hours-only toggle. It returns total cost, cost per minute, cost per hour, a four-part breakdown, and annual SLA exposure.

Related

SLA Uptime Calculator

99.9% vs 99.99% downtime allowances

SLA Credit Asymmetry

Why SLA credits don't cover the loss

Benchmarks & Sources

ITIC 2024, Uptime Institute 2025

Outage Case Studies

CrowdStrike $5.4B and more

Updated 2026-04-27