OEE calculator

What is an OEE gain worth to your plant?

This free calculator shows, in under a minute, how much more your plant can produce, or how much labor it can recover, by raising OEE.

  • ✓ Instant result
  • ✓ Transparent assumptions
  • ✓ Free

Your operation

units / yr
Total units the plant produces per year.
people
Operators who work directly on the lines.
%
Overtime as a share of regular hours.
Wage plus taxes and benefits, per hour.

Your OEE

%
Your average OEE today.
points
Points you aim to gain. From 55% to 70% is 15 points.

Your potential

Additional production · units per year
0
Labor cost recovered · per year
0
Projected OEE

55% → 70%

Estimates based on the values you entered and on 2,080 working hours per employee per year. The two results are alternative scenarios (more output or lower cost) and should not be added together. Actual gains vary by operation.

See it on your line

Measuring is the first step

The spreadsheet shows the past. Cogtive captures OEE from your machines in real time, and goes further.

OEE is the foundation of the cockpit, not the destination. On top of it, Cogtive manages setup, capacity, flow and pace, so the plant knows where to act and whether the monthly plan will close.

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OEE quick guide

OEE in three factors.

What is OEE?

OEE (Overall Equipment Effectiveness) measures how much a line actually produces compared with its full potential. It combines three factors in one number: availability, performance and quality.

How to calculate OEE

OEE = Availability × Performance × Quality

  • Availability = run time ÷ planned production time. Losses from stops and setups.
  • Performance = (ideal cycle time × units produced) ÷ run time. Speed losses and micro-stops.
  • Quality = good units ÷ units produced. Rejects and rework.

Example: a line with 90% availability, 85% performance and 97% quality has an OEE of 0.90 × 0.85 × 0.97 = 74%. For a step-by-step walkthrough, read how to calculate OEE.

What is a good OEE?

There is no single number, but these reference bands are widely used:

≥ 85%Benchmark for world-class performance.
60–84%A healthy operation, with room to gain.
40–59%Common where OEE is still measured on spreadsheets.
< 40%Large potential for fast recovery.

FAQ

OEE, answered.

What is the OEE formula?

OEE = Availability × Performance × Quality. Each factor ranges from 0 to 100%, and OEE is the product of the three.

What is a good OEE?

An OEE of 85% is the usual benchmark for world-class performance. Below 40%, there is usually a large and fast recovery potential in downtime, speed losses and rejects.

Can OEE reach 100%?

Not in practice. 100% would mean producing only good units, at maximum speed, with no stops at all. That is why 85% is treated as the benchmark.

What is the difference between OEE and productivity?

OEE measures how effectively equipment is used, combining availability, speed and quality. Productivity measures output per resource, such as per hour or per employee. OEE helps explain why productivity is high or low.

How do you increase OEE?

Reduce unplanned stops, remove speed losses and cut rejects and rework, the so-called six big losses. The first step is measuring in real time, so you can see where each percentage point is lost.