Enter the total good count, the ideal cycle time, and the total planned produced time to determine the overall equipment effectiveness (OEE).

OEE Formula

The following formula is used to calculate the overall effectiveness of equipment.


  • Where OEE is the oeverall equipment effectiveness
  • IDCT is the ideal cycle time (min/hours)
  • GC is the good count or number of produced pieces that satisfy set requirements
  • PPT is the planned production time (min/hours)

It’s important that both the ideal cycle time and planned production time are entered with the same units of time into the calculator or formula.

OEE Definition

What is OEE?

OEE, short for overall equipment effectiveness, is a metric used in manufacturing to analyze the theoretical total output of a piece of equipment.

Example Problem

How to calculate OEE?

  1. First, determine the ideal cycle time.

    For this example, the idea cycle time is found to be 40 minutes.

  2. Next, determine the good count.

    In this case, 10 pieces are required to meet the requirement.

  3. Next, determine the total planned production time.

    For this problem, the total planned production time is 480 minutes.

  4. Finally, calculate the overall equipment effectiveness.

    Using the formula above, the OEE is calculated to be:
    OEE= IDCT * GC / PPT
    OEE= 40 * 10 / 480
    OEE= .8333