MTTR Calculator
Calculate mean time to repair (MTTR), a common maintenance performance metric.
How to use this calculator
What to enter
Enter or select the following as requested: Total repair time; Number of completed repairs. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The production or reliability metric is calculated from the operating time, output, defects, failures, or capacity values entered. Check the time basis, planned versus unplanned downtime, and whether the metric follows the definitions used by your operation.
When to use it
Use this to compare production performance, equipment reliability, quality, or capacity over consistent periods. Validate definitions against plant records before using the result for operational targets.