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Calcimator

Patch Management Calculator

Calculate patch management workload, labor costs, compliance metrics, and automation ROI for your IT infrastructure.

Inputs

%
min
$/hr

Results

Monthly Patch Instances

11,500

Annual Labor Cost

$2,587,500.00

≈ 6 average U.S. homes

Monthly Labor Hours2,875hrs
Monthly Labor Cost$215,625.00
Failed Patches/Month1,725
Avg Exposure Window7days
Automation Savings/Year$1,522,500.00
FTEs Required18
Critical Patch Gap600
Critical Sla (%)80%
How to Use This Calculator
  1. Enter the total number of endpoints in the environment.
  2. Set the average number of patches per month and time to patch per endpoint.
  3. Input IT labor cost per hour and acceptable patch compliance percentage.
  4. Review monthly patch management labor cost and projected vulnerability exposure window.
  5. Use the exposure window to justify automation tools that reduce patch cycle times.

How the result changes with Total Assets

Total AssetsMonthly Patch InstancesAnnual Labor Cost
10,001230,023$51,755,175.00
35,001805,023$181,130,175.00
65,0001,495,000$336,375,000.00
90,0002,070,000$465,750,000.00

What each input means

Total Assets
Servers, workstations, and network devices.
Critical Patches/Month
Average critical/emergency patches per month.
High Patches/Month
Average high-priority patches per month.
Patch Success Rate
Percentage of patches successfully deployed.
Avg Time Per Patch
Average minutes per patch per device.
IT Hourly Rate
Fully-loaded hourly cost for IT staff.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Assets = 500, Critical Patches/Month = 8, High Patches/Month = 15, Patch Success Rate = 85 = 6 input(s) provided
  2. Calculate Monthly Patch Instances
    Monthly Patch Instances
    11500 = 11500
  3. Calculate Annual Labor Cost
    Annual Labor Cost = totalPatchHours * itHourlyRate
    2587500 = $2,587,500
  4. Calculate Monthly Labor Hours
    Monthly Labor Hours = totalPatchMinutes / 60
    2875 = 2875
  5. Calculate Monthly Labor Cost
    Monthly Labor Cost = totalPatchHours * itHourlyRate
    215625 = $215,625

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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