80 lb QUIKRETE yields 0.60 cu ft: 45 bags per yard before waste. A 2×4 tallies as 2 by 4. The dressed stick is 1-1/2 by 3-1/2. Paint is gallons and quarts. Each sheet prints that buyable count, the unrounded figure, and a URL with the inputs.
Imperial first. Metric is a toggle on the same page. Not a bid and not a price. The label on the product wins if it disagrees. Ad slots are empty. Disclosure.