EXPLORE A NUTRIENT
Calcium
Discover how amounts vary across foods, on a shared basis for comparison.
Understand this nutrient ↓What is it?
The element Ca is reported in mg; its amount does not identify a particular compound. [1] [2]
An identity reference, not the appearance of the food.
Description, source and attribution
Element Ca, atomic number 20. The graphic does not assign an oxidation state or compound to the food measurement.
Original Bitameans element graphic; symbol and atomic number from PubChem. Source · Reuse terms
Source check:
A COMMON BASIS
Foods, per 100 g
205 foods with data 1 not reported, excluded from ranking
- Rainbow trout
Farmed rainbow trout, cooked with dry heat.
30 mg - Blackberries
Blackberries, raw, exactly as identified by USDA.
29 mg - Chestnuts
Nuts, chestnuts, european, roasted, exactly as identified by USDA.
29 mg - Adzuki beans
Beans, adzuki, mature seeds, cooked, boiled, without salt, exactly as identified by USDA.
28 mg - Romaine lettuce
Green romaine lettuce, raw.
27.56 mg - Black beans
Cooked; boiled; without salt, as stated in the USDA source description.
27 mg - Green peas
Green peas, boiled, drained, without salt.
27 mg - Mung beans
Mung beans, mature seeds, cooked, boiled, without salt, exactly as identified by USDA.
27 mg - Sweet potato
Sweet potato, boiled without skin; added salt is not stated in the source description.
27 mg - Black-eyed peas
Cowpeas, catjang, mature seeds, cooked, boiled, without salt, exactly as identified by USDA.
26 mg - Lemon
Raw lemon without peel.
26 mg - Gooseberry
Gooseberries, raw, exactly as identified by USDA.
25 mg
All results are sorted before pagination. Bars compare amounts within this search; they do not indicate health benefits. Not reported does not mean zero.
UNDERSTAND THE DATA
The nutrient, in context
How to read this ranking
This page compares Calcium (Calcium, Ca), in mg per 100 g of food.
Chemical forms and measurement methods remain separate. “Not reported” means a value is unavailable, not that the food contains zero. A food’s rank does not determine your individual needs or diagnose a deficiency.
This NIH fact sheet concerns this nutrient. Its recommended amounts describe daily intake for the stated population, not a 100 g food portion. Keep food and supplement exposure separate as the source specifies.
NIH · OFFICE OF DIETARY SUPPLEMENTS
Calcium: Fact Sheet for Consumers
Original text published by NIH, including intake tables by age and sex, cautions, and the population context the source states. Bitameans has not performed an independent medical review or adapted these recommendations to your personal circumstances.
What is calcium and what does it do?
Calcium is a mineral your body needs to build and maintain strong bones and to carry out many important functions. Calcium is the most abundant mineral in the body.
Almost all calcium in the body is stored in bones and teeth, giving them structure and hardness.
Your body needs calcium for muscles to move and for nerves to carry messages between your brain and every part of your body. Calcium also helps blood vessels move blood throughout your body and helps release hormones that affect many functions in your body. Vitamin D helps your body absorb calcium.
How much calcium do I need?
The amount of calcium you need each day depends on your age and sex. Average daily recommended amounts are listed below in milligrams (mg).
Identity and structure sources
- PubChem Periodic Table of Elements · Accessed 2026-09-13
- USDA FoodData Central: Foundation Foods Documentation · Accessed 2026-09-13