Average Order Value (AOV)
BeginnerAverage order value is the typical amount of a single order, obtained by dividing total order value by the number of orders in the period.
The denominator is orders, not visitors and not sessions; dividing revenue by users produces a different metric, average revenue per user, which answers a different question. More consequential than the formula is the convention in the numerator: whether shipping, tax, discounts and refunds sit inside the figure moves it noticeably, and two tools rarely agree, so the convention belongs next to the number. It is also an average, and in most catalogues a few large orders pull it upward, which makes median order value the more honest companion. The classic misreading follows from that: a rising figure is not automatically good news and may only mean cheap items went out of stock so small baskets were never placed.
How it is calculated
Average order value = total value of orders ÷ number of orders
Each order must be counted once; reloading a payment success page is a common way to emit a duplicate purchase event, so deduplication by order identifier is a precondition for a correct denominator. The unit is currency, and the numerator must be labelled as either gross or net of refunds and discounts.