Source: https://ods.od.nih.gov/factsheets/Calcium-QuickFacts/
The amount of calcium you need each day depends on your age. Average daily recommended amounts are listed below in milligrams (mg):
| Birth to 6 months | 200 mg |
| Infants 7–12 months | 260 mg |
| Children 1–3 years | 700 mg |
| Children 4-8 years | 1,000 mg |
| Children 9–13 years | 1,300 mg |
| Teens 14–18 years | 1,300 mg |
| Adults 19–50 years | 1,000 mg |
| Adult men 51–70 years | 1,000 mg |
| Adult women 51–70 years | 1,200 mg |
| Adults 71 years and older | 1,200 mg |
| Pregnant and breastfeeding teens | 1,300 mg |
| Pregnant and breastfeeding adults | 1,000 mg |
Upper limits – calcium:
Source: https://ods.od.nih.gov/factsheets/Calcium-QuickFacts/
The safe upper limits for calcium are listed below. Most people do not get amounts above the upper limits from food alone; excess intakes usually come from the use of calcium supplements. Surveys show that some older women in the United States probably get amounts somewhat above the upper limit since the use of calcium supplements is common among these women.
| Birth to 6 months | 1,000 mg |
| Infants 7-12 months | 1,500 mg |
| Children 1-8 years | 2,500 mg |
| Children 9-18 years | 3,000 mg |
| Adults 19-50 years | 2,500 mg |
| Adults 51 years and older | 2,000 mg |
| Pregnant and breastfeeding teens | 3,000 mg |
| Pregnant and breastfeeding adults | 2,500 mg |
