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MTBF Calculator | MTTF Calculator | online

This page of converters and calculators section covers MTBF calculator and MTTF calculator. The MTBF calculator online is very useful to calculate MTBF of newly launched product.

Number of devices under test (input1) :

Duration of the test in Hours (input2) :

Number of failures reported (input3) :

MTBF (Output1):

MTTF (Output2):


*Note: Enter values in INPUT boxes and Press CALCULATE button to check OUTPUTS.

EXAMPLE of MTTF calculator and MTBF calculator:
INPUTS: Number of devices under test= 30 , Duration of the test in Hours= 100 , Number of failures reported= 3,
MTBF = 33.33 Hours/failure, MTTF= 3.33 hours/device

MTBF calculator and MTTF calculator Equations

Both of these terms MTBF(Mean Time Between Failure) and MTTF (Mean Time To Failure) are veryful measurements in reliability domain. The terms are useful to determine life of the developed product. This helps to avoid and troubleshoot failure before the age limit calculated. Hence MTBF and MTTF calculations will help to develop product which lasts for longer life cycle in the future. MTBF calculator and MTTF calculator equations or formulas are mentioned in the figure below.

MTTF calculator and MTBF calculator equations

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