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A cup of raw spinach has about 30 mg of calcium, and a cooked cup has roughly 245 mg, though oxalates limit absorption to an estimated 5%.

A cup of raw, chopped broccoli contains about 43 mg of calcium, while a cup of cooked broccoli provides roughly 60–70 mg as of early 2026.

Calcium content in almond milk varies by brand, with commercially fortified versions typically providing 450 to 482 mg per 8-ounce cup.

A medium-sized banana (about 118 grams) contains roughly 5 to 6 mg of calcium, which is less than 1% of the Daily Value for most adults.

Five prunes contain about 21.5 mg of calcium — a modest amount, but their real value for bones comes from vitamin K, potassium.

An 8-ounce glass of 2% milk contains about 300 mg of calcium, meeting roughly 25% of the Daily.

A medium orange (about 154 grams) provides roughly 55 to 65 milligrams of calcium, which is about 5 to 6% of the Daily Value.

One standard 1-cup (240 ml) glass of cow’s milk contains approximately 300 milligrams of calcium.

Arabica beans contain roughly 12 mg of caffeine per gram, while Robusta beans pack about 22 mg per.

Vitamin Water Focus contains just 6 mg of caffeine per 20-ounce bottle, a trace amount far below the 50 mg found in a standard can of Coke.