To calculate MTTF, divide the total number of hours of operation by the total number of assets in use. Calculating MTTF with a larger number of assets will lead to a more result as MTTF represents the average time to failure.

How do you calculate MTTF reliability?

The mean life function, such as the mean time to failure (MTTF), is widely used as the measurement of a product's reliability and performance. This value is often calculated by dividing the total operating time of the units tested by the total number of failures encountered.

How do you calculate failure rate from MTTF?

The estimate of the MTBF is: MTBF= (10*500)/2 = 2,500 hours / failure. Whereas for MTTF MTTF= (10*500)/10 = 500 hours / failure. If the MTBF is known, one can calculate the failure rate as the inverse of the MTBF.