Dietary Reference Intakes for Calcium in United States (per day)

Males	EAR	RDA	AI	UL
0-6 months	-	-	200 mg	1000 mg
7-12 months	-	-	260 mg	1500 mg
1-3 years	500 mg	700 mg	-	2500 mg
4-8 years	800 mg	1000 mg	-	2500 mg
9-13 years	1100 mg	1300 mg	-	3000 mg
14-18 years	1100 mg	1300 mg	-	3000 mg
19-30 years	800 mg	1000 mg	-	2500 mg
31-50 years	800 mg	1000 mg	-	2500 mg
50-70 years	800 mg	1000 mg	-	2000 mg
70 years and older	1000 mg	1200 mg	-	2000 mg

Females	EAR	RDA	AI	UL
0-6 months	-	-	200 mg	1000 mg
7-12 months	-	-	260 mg	1500 mg
1-3 years	500 mg	700 mg	-	2500 mg
4-8 years	800 mg	1000 mg	-	2500 mg
9-13 years	1100 mg	1300 mg	-	3000 mg
14-18 years	1100 mg	1300 mg	-	3000 mg
19-30 years	800 mg	1000 mg	-	2500 mg
31-50 years	800 mg	1000 mg	-	2500 mg
50-70 years	1000 mg	1200 mg	-	2000 mg
70 years and older	1000 mg	1200 mg	-	2000 mg

Pregnancy	EAR	RDA	AI	UL
less than 18 years	1100 mg	1300 mg	-	3000 mg
19-30 years	800 mg	1000 mg	-	2500 mg
31-50 years	800 mg	1000 mg	-	2500 mg

Lactation	EAR	RDA	AI	UL
less than 18 years	1100 mg	1300 mg	-	3000 mg
19-30 years	800 mg	1000 mg	-	2500 mg
31-50 years	800 mg	1000 mg	-	2500 mg