Onion (Chopped) – cups to grams

'One medium onion' is cooking's vaguest measurement: it can range from 100g to 300g. For a soup, it might not matter, but in sauces, meatballs, or fillings, excess onion releases water that can ruin the texture. Weighing chopped onion gives you total control over flavor and moisture.

Quick convert

  • US cup = 236.588 mL
  • 1 tbsp = 14.787 mL
  • 1 tsp = 4.929 mL

Reference table

Cups g
40
80
121
161
241
322

Weigh for sautés, soups, and sauces to balance aromatics.

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FAQ

Small, Medium, Large Onion: What are the weights?
Roughly: Small = 110g, Medium = 150-170g, Large = 250g+. But nature varies. If a recipe calls for '1 cup chopped onion', aim for about 150g.

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