THE NUMBERS, EXPLAINED
How to use this calculator.
OEE multiplies availability, performance and quality. Ideal cycle time must be defined for this product.
Start with your inputs
Enter planned minutes, run minutes, ideal cycle (minutes), total units, good units. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Planned minutes | 480 |
| Run minutes | 400 |
| Ideal cycle (minutes) | 1 |
| Total units | 350 |
| Good units | 340 |
A worked example
With the example inputs above, oee (%) is 70.833333. Change the inputs to explore your own scenario.
Putting the example numbers into the formula
OEE (%)
(400) ÷ (480) × ((1) × (350) ÷ (400)) × ((340) ÷ (350)) × 100 = 70.833333
Availability (%)
(400) ÷ (480) × 100 = 83.333333
| Result | Example answer |
|---|---|
| OEE (%) | 70.833333 |
| Availability (%) | 83.333333 |
How this is calculated
OEE (%)
b ÷ a × (c × d ÷ b) × (e ÷ d) × 100
Availability (%)
b ÷ a × 100
Symbols and units
- a
- Planned minutes
- b
- Run minutes
- c
- Ideal cycle (minutes)
- d
- Total units
- e
- Good units
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
OEE multiplies availability, performance and quality. Ideal cycle time must be defined for this product.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
OEE (%); Availability (%). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: OEE multiplies availability, performance and quality. Ideal cycle time must be defined for this product.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →