Stock Time is how long we expect the product to be in stock (before it is sold out). Expected demand is taken into account here.

Generally, these metrics are well known and have multiple ways of being calculated, hence if you notice some discrepancies it is because you could be using another formula. Also, please keep in mind that these metrics are dynamic and can change based on our calculations of demand, changes in average stock etc.

The 'Stock time' is calculated as:

Stock Time = Current Stock on hand [divided by] Average expected demand over the next 30 days.

This is a good indication of when the stock time is high or low, but it's inaccurate if the 'Expected demand (30 days)' is different from the later expected demand (due to a peak season for example), even if we predict this will be the case.