Calculate Mercury Content in Fish & Seafood

Eating seafood high in mercury is hazardous to your health, especially for women and children. Our “Got Mercury?” calculator below helps you make healthier seafood choices. Just enter your weight, the seafood type, the amount of seafood you will eat during a week, and click the “calculate” button to see the mercury content in fish.

Calculation Tips

How can I enter grams and kilograms?
  • 1 kilogram = 2.2 pounds
  • 1 gram = 0.0353 ounces
How many ounces of seafood is a typical portion?
  • A typical serving of fish (steak or fillet) is about 6 to 8 ounces.
  • A sushi order is 2 to 4 ounces per type.
  • A standard can of tuna contains 6 ounces.
Advanced Calculator | Calculadora de mercurio en mariscos en Español  

Mercury Resources

Find out more, read our fact sheets and reports on mercury and seafood here.