Cheapest right now: $0.42 per gram — BulkSupplements.com Calcium Carbonate Powder - Calcium Supplement, Calcium 500mg - Calcium…. $3.83 median of 4 in-stock listings. Updated 26 Aug 2026.
| $/g calcium ▲ | Dose | Price | Size | Form | Type | Rating | Name |
|---|---|---|---|---|---|---|---|
| $0.42 | 500 mg | $41.95 | 250 g · 200 srv | Powder | Carbonate | 4.6 (573) | BulkSupplements.com Calcium Carbonate Powder - Calcium Supplement, Calcium 500mg - Calcium Carbonate Food Grade, 1250mg (500mg Calcium) per Serving, 250g (8.8 oz) (Pack of 1) |
| $7.24 | 120 mg | $29.55 | 340 g · 34 srv | Powder | Carbonate | 4.7 (2.4K) | NOW Calcium Carbonate Powder, 12-Ounces |
| — | ~500 mg | $45.99 | 2× · 1.81 kg | Powder | Carbonate | 4.6 (88) | 2 Pack - Best Naturals Calcium Carbonate Powder 1 Pound (Total 2 Pound) - Food Grade |
| — | ~1.3 g | $42.42 | 500 g | Powder | Carbonate | 4.6 (573) | BulkSupplements.com Calcium Carbonate Powder - Calcium 500mg - Calcium Supplement - Vegan Calcium - Calcium Carbonate Food Grade - Calcium Powder - 1250mg per Serving (500 Grams - 1.1 lbs) |