Where does the 1,300 mg reference value come from?

1,300 mg is the FDA's current Daily Value for calcium used on Nutrition Facts labels, based on recommendations for adults and children ages 4 and up.

Is more calcium always better?

No, excess calcium intake — especially from supplements — has been linked to kidney stones and other issues. Aim to hit 100% DV through diet and supplements combined, not far exceed it.

Calcium Daily Value (%DV) Calculator

Calculate the Percent Daily Value (%DV) of calcium in a food or supplement based on the current FDA reference daily intake of 1,300 mg, helping you gauge how much of your daily calcium needs a serving covers.

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% Daily Value: 20%

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Formula

%DV = (Calcium mg / 1,300 mg) × 100

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