MTBF Glossary Definition

Mean time between failures (MTBF) is the predicted elapsed time between inherent failures of a mechanical or electronic system, during normal system operation. MTBF can be calculated as the arithmetic mean (average) time between failures of a system. The term is used for repairable systems, while mean time to failure (MTTF) denotes the expected time to failure for a non-repairable system. See also: MTBF.

In cross-functional technology work, this term provides background for concepts that support multiple disciplines rather than one narrow specialty. It is relevant when a reader needs a concise explanation that can transfer across business, technical, documentation, or operational settings.