Reliability Toolkit

MTBF, MTTR & Availability Calculator

Estimate long-run inherent availability for a repairable single system with characteristic mean failure and repair times.

Engineering inputs

Supported range: 1e-06 to 1e+12.

Supported range: 1e-06 to 1e+09.

Results

Your calculation

Enter the inputs and select Calculate.

Model notes

Uses inherent steady-state availability only; planned maintenance, logistics delays, redundancy and confidence bounds are excluded. MTBF is not design lifetime.

Further reading

Book References

Practical Reliability Engineering

Patrick D. T. O'Connor and Andre V. Kleyner

5th Edition. Wiley, 2012.

ISBN 9780470979822

Book details