getabiteFirm tofu
683 mg calcium per 100 g
0.4 × 1 block (approx.)
Calcium calculator
How much plant food do you need for a calcium goal? See stacks of portions, not only numbers.
1000 mg calcium from firm tofu
1,000 mg calcium = 0.4 × 1 block (approx.) (Firm tofu)
146 g of food · 211 kcal
Fixed example for search engines: firm tofu for 1000 mg calcium. Values from USDA FoodData Central. Foods here come from many regions.
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Daily reference helper
Population reference only. Not personal advice.
1,000 mg calcium per day. Source: WHO/FAO Vitamin and mineral requirements, 2004 (adults). As of January 1, 2004.
Food for 1,000 mg calcium
Calcium foods
Short pages for fifteen plant calcium sources, with ready examples.
Questions
How is the amount calculated?
We use calcium per 100 g from USDA FoodData Central for the edible form. Grams of food = target calcium ÷ calcium per 100 g × 100. Portions divide that mass by the portion size in the dataset.
Why plant foods only?
GetaBite focuses on plant foods. The lists highlight common plant sources of calcium.
Is this personal nutrition advice?
No. Reference values from WHO, EFSA, and US DRI are population averages. They are not medical advice.