Most food labels list calcium as a % of daily value (DV), rather than in milligrams (mg). They use a base daily value recommendation of 1,000 mg, so to find out how many milligrams of calcium are contained in a serving, add a 0 to the % DV, for example 10% DV becomes 100 mg of calcium.

Age Group
1997 Adequate Intake
Values* (mg)
Birth to 6 months
200
6-12 months
260
1-3 years
700
4-8 years
1,000
9-13 years
1,300
14-18 years
1,300
Pregnant or lactating teens
1,300

*Recommendations based on the Dietary Reference Intakes for Calcium, Institute for Medicine, 2010. (Source: Institute for Medicine)