Enter the number of people, their age groups, and your preferred pasta shape to find out exactly how much dry pasta to cook. The Pasta Per Person Calculator returns the total dry pasta needed in grams and ounces, plus a per-person breakdown — so you never over- or under-cook again. Also try the Uncooked to Cooked Rice Calculator.
Total Dry Pasta Needed
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Total in Ounces
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Per Adult Serving
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Total Adult-Equivalent Servings
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Standard 500g Boxes Needed
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The standard recommendation is about 75–85g (roughly 3 oz) of dry pasta per person for a main course. This doubles in weight once cooked, giving approximately 150–170g of cooked pasta per serving. For a side dish or starter, 40–50g per person is usually sufficient. See also our Noodle Portion Calculator.
The most accurate method is a kitchen scale. For long pasta like spaghetti, a 75g bundle is roughly the diameter of a 10-cent coin at the base. For short shapes like penne or fusilli, 75g fills about three-quarters of a standard mug. Measuring by volume is less precise because shapes pack differently.
The weight per serving stays roughly the same (75–85g dry) regardless of shape, but volume looks very different. Fine pasta like angel hair packs densely, while large hollow shapes like rigatoni take up far more space in a cup. Always weigh pasta rather than measuring by volume for accuracy.
Children aged 3–10 typically eat about half an adult portion — roughly 35–40g of dry pasta. Teenagers aged 11–18 usually eat close to or as much as an adult. Toddlers (1–2 years) need very small portions, around 20–25g dry pasta at most. You might also find our Oatmeal Ratio Calculator useful.
Breaking pasta is largely a matter of preference — it does not affect cooking time or flavour. In Italian tradition, long pasta like spaghetti or linguine is left whole and eased into boiling water as it softens. Breaking is perfectly fine if you prefer shorter pieces or need to fit pasta into a smaller pot.
Dry pasta roughly doubles in weight after cooking. A 75g dry portion yields around 150–175g of cooked pasta. Cooking time and pasta shape can cause slight variation — very fine pasta absorbs water faster and may weigh a little less than thick pasta after cooking.
A standard 500g box serves approximately 6 adults as a main course (at 80–85g per person) or up to 10 people as a side dish. For a family of 4 eating a main course, one box comfortably covers the meal with a little left over.
Leftover cooked pasta keeps well in the fridge for up to 3 days in an airtight container. Toss it lightly in olive oil before storing to prevent clumping. Reheat with a splash of water in a pan or microwave, or repurpose it in pasta bakes, frittatas, or cold pasta salads.