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Calcimator

OEE Calculator

Calculate Overall Equipment Effectiveness from availability, performance, and quality metrics. Identify downtime, speed, and defect losses in manufacturing.

Inputs

Results

OEE

68.75%

Classification

Good — typical for discrete manufacturing

Availability87.5%
Performance83.33%
Quality94.29%
Downtime60 min
Defective Units40
Defect Rate5.71%
Actual Cycle Time36 sec
Speed Loss16.67%
TEEP (24/7 basis)22.92%
How to Use This Calculator
  1. Enter Planned Production Time (min), Actual Run Time (min), and Ideal Cycle Time (sec).
  2. Set Total Units Produced and Good Units (First Pass).
  3. Review OEE (%) and Classification.
  4. Use Availability (%) and Performance (%) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Planned Production Time (min)

Planned Production Time (min)OEEClassification
14594.29%World Class
50565.35%Good — typical for discrete manufacturing
93635.26%Poor — significant losses to address
1,29625.46%Poor — significant losses to address

What each input means

Planned Production Time (min)
Total scheduled production time in minutes (e.g., 480 = 8-hour shift).
Actual Run Time (min)
Actual time the equipment was running. Planned time minus unplanned stops and changeovers.
Ideal Cycle Time (sec)
Theoretical fastest time to produce one unit in seconds.
Total Units Produced
Total number of units produced including both good and defective units.
Good Units (First Pass)
Number of units that passed quality inspection on the first attempt.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Planned Production Time (min) = 480, Actual Run Time (min) = 420, Ideal Cycle Time (sec) = 30, Total Units Produced = 700 = 5 input(s) provided
  2. Calculate OEE
    OEE
    68.75 = 68.75
  3. Calculate Classification
    Good — typical for discrete manufacturing = Good — typical for discrete manufacturing
  4. Calculate Availability
    Availability
    87.5 = 87.5
  5. Calculate Performance
    Performance
    83.33 = 83.33

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