Units Per Transaction (UPT)
Units Per Transaction (UPT) is the average number of items in each sales transaction, calculated as total units sold divided by the number of transactions.
Units Per Transaction (UPT) is the average number of items sold per transaction. It measures basket size by item count, and is most useful read alongside ATV — together they show whether revenue is driven by more items, pricier items, or both.
UPT = Total units sold / Transactions
A higher UPT means customers are buying more items per visit, typically reflecting effective cross-selling, add-on prompts at the till, or strong bundle offers.
Worked example
- A store sold 450 units today.
- It processed 180 transactions.
- UPT = 450 / 180 = 2.5 units per transaction.
If UPT rises while ATV holds steady, the average item price has dropped — useful context when reviewing promotional periods.