OEE Calculator

OEE multiplies the three sub-scores together rather than averaging them, since it's calculating the fraction of theoretical capacity that survives all three loss categories at once. Three 95% factors compound to 0.95 × 0.95 × 0.95 ≈ 0.857, or about 86% — each dimension's loss stacks on the others, which is why small, seemingly-acceptable losses in each category can add up to a much bigger overall gap than any single number suggests.

OEE measures effectiveness against your Planned Production Time — the shift or schedule you actually intended to run. TEEP multiplies that same OEE against a full 24/7 calendar (1,440 minutes) instead, so it answers a different question: how much output are you getting relative to running the equipment nonstop, with no scheduled downtime at all. TEEP will always be lower than OEE unless your planned time already covers the full calendar.

Performance compares Ideal Cycle Time × Total Units Produced against Run Time, and this calculator caps the result at 100% because producing units faster than the theoretical ideal rate isn't a real efficiency gain — it usually signals an under-estimated ideal cycle time rather than the line genuinely beating its own physical limit. A Performance score near 100% means the line ran close to its fastest rated speed with minimal minor stops or slowdowns.

It would badly distort Performance and therefore OEE. The calculator converts your Ideal Cycle Time from seconds to minutes internally before comparing it to Run Time, so entering a minutes value where seconds is expected would make the equipment look 60 times faster than its real ideal rate, likely pushing Performance to the 100% cap and reporting an artificially inflated OEE that doesn't reflect the actual line.