Calcium: the numbers
Everything below is computed from the 107 curated calcium we track - no estimates, no third-party data.
107Curated models
52Brands
★ 4.6Average Amazon rating
426,364Amazon ratings
How Amazon buyers rate them
The average Amazon rating across the category is ★ 4.6. Low-rated products with meaningful rating volume are dropped during curation, so the spread below reflects the survivors.
Brand share of the curated catalog
Most-rated models
| Ratings | ||
|---|---|---|
| Nature's Bounty Calcium 1200 mg with 1000 IU | ★ 4.6 | 43,000 |
| Nature Made Calcium 600 mg with Vitamin D3, | ★ 4.7 | 27,200 |
| Nature's Bounty Calcium Magnesium & Zinc Caplets, Immune | ★ 4.7 | 23,000 |
| Nature Made Calcium Magnesium Zinc with Vitamin D3, | ★ 4.8 | 19,900 |
| Caltrate 600 Plus D3 Calcium and Vitamin D | ★ 4.7 | 16,400 |
Where these numbers come from
Counts, ratings, and rating totals are pulled from the curated calcium catalog on every build - the same data behind the Calcium category page. Junk listings and no-name brands are filtered out before anything is counted. Product data: last refreshed aug 4, 2026.