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Cheapest Calcium on iHerb

Ranked by real cost per 100,000 mg of Calcium — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

#ProductDoseServingsPrice (USD)Cost per 100,000 mg
1
Imagine Soups, Organic Tomato Creamy Soup, 32 fl oz (946 ml)
Imagine Soups, Organic Tomato Creamy Soup, 32 fl oz (946 ml)
Imagine Soups
30 mg9463525.680.020View on iHerb →
2
NaturesPlus, Cal/Mag/Vit D3 with Vitamin K2, 90 Tablets
NaturesPlus, Cal/Mag/Vit D3 with Vitamin K2, 90 Tablets
NaturesPlus
1,200 mg22517.386.44View on iHerb →
3
NOW Foods, Bone Meal Powder, 1 lb (454 g)
NOW Foods, Bone Meal Powder, 1 lb (454 g)
NOW Foods
750 mg16215.9213.10View on iHerb →
4
Sundance Vitamins, Absorbable Calcium + D3, 60 Quick Release Softgels
Sundance Vitamins, Absorbable Calcium + D3, 60 Quick Release Softgels
Sundance Vitamins
1,200 mg305.9216.44View on iHerb →
5
Siete, Vegan Charro Beans, 15.5 oz (439 g)
Siete, Vegan Charro Beans, 15.5 oz (439 g)
Siete
43 mg4393.3517.75View on iHerb →
6
NutraBio, Micellar Casein, Alpine Vanilla , 2 lb (907 g)
NutraBio, Micellar Casein, Alpine Vanilla , 2 lb (907 g)
NutraBio
728 mg27944.9922.15View on iHerb →
7
NutraBio, Micellar Casein, Dutch Chocolate, 2 lb (907 g)
NutraBio, Micellar Casein, Dutch Chocolate, 2 lb (907 g)
NutraBio
731 mg26844.9922.96View on iHerb →
8
KAL, Bone Meal Powder, 16 oz, (450 g)
KAL, Bone Meal Powder, 16 oz, (450 g)
KAL
1,300 mg7522.9923.58View on iHerb →
9
NOW Foods, Calcium & Magnesium, 240 Softgels
NOW Foods, Calcium & Magnesium, 240 Softgels
NOW Foods
667 mg12020.2125.25View on iHerb →
10
NutraBio, MRP 40:40:20 Meal Replacement, Creamy Vanilla, 2.4 lb (1,096 g)
NutraBio, MRP 40:40:20 Meal Replacement, Creamy Vanilla, 2.4 lb (1,096 g)
NutraBio
419 mg182.0026.52View on iHerb →
11
NOW Foods, Calcium & Magnesium with Vitamin D3 and Zinc, 120 Softgels
NOW Foods, Calcium & Magnesium with Vitamin D3 and Zinc, 120 Softgels
NOW Foods
667 mg6011.0227.54View on iHerb →
12
Crown Prince Natural, Wild Caught Sardines, In Tomato Sauce, 7.5 oz (213 g)
Crown Prince Natural, Wild Caught Sardines, In Tomato Sauce, 7.5 oz (213 g)
Crown Prince Natural
340 mg252.3828.00View on iHerb →
13
Citracal, Maximum Plus +D3, 180 Coated Caplets
Citracal, Maximum Plus +D3, 180 Coated Caplets
Citracal
650 mg9016.6328.43View on iHerb →
14
Amazing Nutrition, Daily Multivitamin, 250 Tablets
Amazing Nutrition, Daily Multivitamin, 250 Tablets
Amazing Nutrition
200 mg25014.9929.98View on iHerb →
15
KAL, Bone Meal Powder, 8 oz (227 g)
KAL, Bone Meal Powder, 8 oz (227 g)
KAL
1,300 mg3714.7930.75View on iHerb →
16
EVLution Nutrition, HMB + Vitamin D3, 90 Veggie Capsules
EVLution Nutrition, HMB + Vitamin D3, 90 Veggie Capsules
EVLution Nutrition
140 mg452.0031.75View on iHerb →
17
One-A-Day, Proactive 65+ For Men & Women, Multivitamin/Multimineral Supplement, 150 Tablets
One-A-Day, Proactive 65+ For Men & Women, Multivitamin/Multimineral Supplement, 150 Tablets
One-A-Day
500 mg7511.9731.92View on iHerb →
18
Citracal, Calcium Supplement + D3, Maximum Plus, 120 Coated Caplets
Citracal, Calcium Supplement + D3, Maximum Plus, 120 Coated Caplets
Citracal
650 mg6013.0133.36View on iHerb →
19
Stonewall Kitchen, Tuscan Herb Quick Bread Mix, 12.7 oz (360 g)
Stonewall Kitchen, Tuscan Herb Quick Bread Mix, 12.7 oz (360 g)
Stonewall Kitchen
90 mg36010.9533.80View on iHerb →
20
NaturesPlus, Ultra-Mins, Multiple Mineral Complex , 180 Tablets
NaturesPlus, Ultra-Mins, Multiple Mineral Complex , 180 Tablets
NaturesPlus
1,000 mg9031.2434.71View on iHerb →
21
Citracal, Calcium Supplement + D3, Slow Release 1200 , 80 Coated Tablets
Citracal, Calcium Supplement + D3, Slow Release 1200 , 80 Coated Tablets
Citracal
1,200 mg4017.8537.19View on iHerb →
22
One-A-Day, Women's Petites Complete Multivitamin, 160 Tablets
One-A-Day, Women's Petites Complete Multivitamin, 160 Tablets
One-A-Day
400 mg8012.9540.47View on iHerb →
23
KAL, Bone Meal, 250 Tablets
KAL, Bone Meal, 250 Tablets
KAL
500 mg12526.3942.22View on iHerb →
24
Toniiq, Calcium AKG, 120 Capsules
Toniiq, Calcium AKG, 120 Capsules
Toniiq
1,500 mg4025.9743.28View on iHerb →
25
NutriBiotic, Immunity, Calcium Ascorbate, 2.2 lb (1 kg)
NutriBiotic, Immunity, Calcium Ascorbate, 2.2 lb (1 kg)
NutriBiotic
180 mg50041.3945.99View on iHerb →

How we rank Calcium

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.