Production Metrics & Process Time Calculation

Production Metrics

💜 ∞ Process Time Calculation


Total Down Time (DT) .......................................
Number of Failures (FN) ...................................
Total Up Time (UT = PT - DT) ...........................
Failure Rate (FR = FN/UT) .................................
Mean Time Between Failure (MTBF = UT/FN) .
Mean Time To Repair (MTTR = DT/FN) ............


Takt Time (TT = PT/UD) .....................................
Cycle Time (CT = PT/UP) ..................................
Crew Size (CS = CT/TT) ....................................


Units Produced per shift (UP) ..........................
Units Demand by customers (UD) ...................
Start-Up process or review (SU) ......................
Breaktimes per shift – minutes (BT) ...............
Pass-Down and clean up – minutes (PD) .......
Number of Shift Hours – in hours (SH) ...........
Production Time per shift – minutes (PT) .......
Total Production Time (PT*1) ...........................

• Takt Time (TT) = Net production Time (PT) / Units Customer Demand (UD)
• CycleTime (CT) = Net Production Time (PT) / Units Produced (UP)
• Lead Time (LT) = Time from order to dispatch
• Crew size (CS) = Cycle Time (CT) / Takt Time (TT)
• CT <= TT ===> enough resources. If CT > TT need more resources or improve process.
• Takt time is external – target: That is demand based.
• Cycle time is internal – actual: That is process based. Reduced only when process improves.