MTBF MTTR Availability Calculator | A = MTBF/(MTBF+MTTR)

Published by Nikolai Shelkovenko on

Free Engineering Tool #227

MTBF / MTTR / Availability Calculator

Calculate Mean Time Between Failures, Mean Time To Repair and Availability.

A = MTBF/(MTBF+MTTR)λ = 1/MTBFReliability
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Results

Availability
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MTBF
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MTTR
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Failure Rate (λ)
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Availability

OEE CalculatorDowntime Cost

Mean Time Between Failures: average operating time between failures. MTBF = total operating time / number of failures.

Mean Time To Repair: average time to restore a system after failure. MTTR = total repair time / number of failures.

World-class: >99%. Good: 95-99%. Average: 90-95%. Below 90% needs improvement.

λ = 1/MTBF (failures per hour). Higher MTBF means lower failure rate.

No. MTBF is a statistical average. Individual failures can occur at any time.

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