MTBF Calculator

Mean Time Between Failures (MTBF) is the average time taken between the failures that occurs in a system. Mean Time to Repair (MTTR) is the average time taken to repair any failure that has occurred. Both MTBF and MTTR are terms that are used in plant and equipment maintenance. Use this online calculator to find the MTBF abd MTTR with total production time, downtime and number of breakdowns.

Mean Time Between Failures Calculation

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Mean Time Between Failures (MTBF) is the average time taken between the failures that occurs in a system. Mean Time to Repair (MTTR) is the average time taken to repair any failure that has occurred. Both MTBF and MTTR are terms that are used in plant and equipment maintenance. Use this online calculator to find the MTBF abd MTTR with total production time, downtime and number of breakdowns.

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Formula:

m=(a-b)/c
n=b/c Where, n = Mean Time To Repair m = Mean Time Between Failures a = Total production time b = Total down time c = Number of breakdowns

Example

By having 14 number of breakdowns with production time of 25 and down time of 15, MTBF and MTTR cab be calculated as:

m= (25-15)/14
n=15/14
MTBF=0.7143
MTTR=1.0714

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