Availability is the operating share of planned time.

highlighted = computed this step

Operating Over Planned

Availability divides operating time by planned time.

availability=operating timeplanned time\text{availability}=\frac{\text{operating time}}{\text{planned time}}
OEE factorsThe table shows each exact numerator, denominator, and factor.OEE cycle factorsnumeratordenominatorvalueavailability901203/4performance901203/4quality40458/9

Compute Availability

Availability is 3/4.

90120=3/4\frac{90}{120}=3/4
OEE cycle-time snapshotThe chart displays the exact factor bars and the final product.OEE factorsOEE = 3/4 x 3/4 x 8/9 = 1/2planned timedowntime 30operating 90planned 120availability3/4performance3/4quality8/9factornumeratordenominatorvalueavailability901203/4performance901203/4quality40458/9what-if downtime 20; availability 5/6; OEE 5/9deterministic snapshot only