🛠️ Maintenance
MTBF & MTTR Calculator
Calculate your machine's reliability (MTBF), repair time (MTTR) and overall availability percentage.
e.g. 720 hrs = 1 month of single-shift operation
Sum of all repair times
📊 Reliability Results
MTBF (Mean Time Between Failures)
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MTTR (Mean Time To Repair)
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Machine Availability
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Failure Rate
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How This Calculator Works
MTBF = (Total Time − Downtime) ÷ Number of Failures
MTTR = Total Downtime ÷ Number of Failures
Availability = MTBF ÷ (MTBF + MTTR) × 100%
Higher MTBF = more reliable machine
Lower MTTR = faster repairs
World-class plants target >95% machine availability.
🔗 Related Calculators
Improving MTBF and MTTR
To improve MTBF (reduce breakdowns): Implement preventive maintenance (PM) schedules, operator-based lubrication and cleaning, condition monitoring, and root cause analysis of each breakdown to prevent recurrence.
To reduce MTTR (faster repairs): Keep spare parts stock for critical components, train maintenance teams on key machines, create visual troubleshooting guides, and implement fast-response repair protocols.