Soup Serving Calculator
A main-course bowl and a starter cup call for very different total volumes — get the batch size right for your headcount.
Why the serving size roughly doubles between courses
A starter course is meant to open the meal without filling anyone up before the main event, so it's typically a small cup (around 6–8 oz) — a main-course bowl is meant to be the meal, or a substantial part of it, and runs closer to 1.5 cups (12 oz). Using a starter-sized batch for a main-course meal is one of the most common ways a pot of soup runs short.
Build in a margin for seconds and evaporation
Soup reduces somewhat as it simmers, and most gatherings have at least a few people who want seconds — adding 10–15% over the calculated total is a reasonable safety margin, especially for a soup that's simmering a long time or that people are likely to love.
What's served alongside changes how much soup people actually want
A soup served with bread, a side salad, and other dishes on the table needs less per person than a soup that's the entire meal on its own — adjust the base numbers here down if it's one part of a bigger spread, or up if it's genuinely the whole dinner.