Pasta Portion and Water Formulas
Dry pasta = diners × grams per person × (1 + extra allowance).
Estimated portions on hand = dry pasta weight ÷ grams per person.
For water, the calculator shows a 4–6 US quart range per pound and uses 5 quarts per pound as the midpoint. For small batches, it applies a practical minimum of 2 quarts at the midpoint so the pasta can be submerged and stirred. The suggested pot is rounded up from enough capacity to keep the midpoint water level at or below roughly three-quarters full.
Cooked volume is a planning estimate based on the selected shape's approximate cooked cups per 2 oz (56.7 g) dry. Shape, brand, ingredients and doneness all affect expansion, so package yield is more specific.
