Calcium price per mg — cheapest first

The calcium figure on a label is elemental calcium, not the weight of the whole compound. Calcium carbonate is about 40% calcium by weight, so 1,250mg of calcium carbonate is declared as 500mg of calcium. The price per mg on this page uses the elemental calcium figure printed on the label as its denominator.

Price per mg ranges from a low of $0.000050/mg to a median of $0.0101/mg. The median is 202× the lowest, so the cost of the same 1mg of Calcium spreads over a hundredfold across products. That means the per-unit gap between products near the top and the middle of the ranking is that large.

Price per mg is computed for 4,266 of the 4,643 listed (92%). The rest, missing a sale price or amount, are placed at the bottom of the ranking and excluded from the statistics above.

The Calcium amount per serving ranges from 0.03mg to 3,000mg, with a median of 100mg. The maximum is 30× the median, so high-dose singles and blends listing a small Calcium amount sit in the same table.

The products in this list come from 591 brands, and the sort order is determined solely by price per mg.

Products classified by label form notation number 1,575 (34% of the total), and the most frequently noted form is Calcium phosphate with 476. Products with no form notation, or whose notation does not match the classification rules, do not appear on the per-form pages, so the per-form product counts sum to less than the total product count above.

This list mixes calcium-only products with blends where calcium is one ingredient among several. For a blend, the price per mg charges the entire product price to calcium alone, so it carries the cost of everything else in the bottle. Serving sizes of several tablets are also in the mix, so the price per serving is not the price of one tablet.