Most fruits contain some calcium, but a few stand out as genuinely useful sources. Dried figs lead the pack at roughly 300 mg per cup, which alone covers about a third of most adults’ daily needs. Fresh fruits like kiwi, oranges, blackberries, and mulberries offer smaller but meaningful amounts, especially when you eat them regularly alongside other calcium-rich foods.
For context, most adults need between 1,000 and 1,200 mg of calcium per day. Fruit alone won’t get you there, but certain fruits can make a real contribution to your total intake.
Dried Figs: The Top Fruit Source
Dried figs are the clear winner. One cup of dried, uncooked figs delivers about 300 mg of calcium. That’s comparable to a glass of milk. The drying process concentrates the minerals, so dried figs contain roughly two to three times more calcium per gram than fresh ones. Fresh figs still carry a respectable 60 to 75 mg per 100 grams depending on the variety, but you’d need to eat quite a few to match their dried counterparts.
One thing worth knowing: dried figs also contain oxalates (about 95 mg per 100 grams), which are compounds that can bind to calcium and reduce how much your body actually absorbs. However, most of the oxalate in dried figs is in an insoluble form, meaning it passes through your system without interfering as much with mineral absorption. So while the calcium in figs isn’t absorbed as efficiently as dairy calcium, they’re still a worthwhile source.
Rhubarb, Mulberries, and Blackberries
Rhubarb is technically a vegetable, but since most people think of it as a fruit ingredient, it deserves a mention. One cup of rhubarb contains about 348 mg of calcium, making it one of the highest plant sources available. Keep in mind that rhubarb is high in oxalates, so absorption is lower than the raw number suggests. It’s still a useful addition, especially in compotes or baked dishes where you eat a full serving.
Mulberries are a surprisingly strong source. Raw black mulberries range from 39 to over 500 mg per 100 grams depending on the variety and growing conditions. That’s an enormous range, but even at the lower end, mulberries outperform most common fruits. Fresh mulberries can be hard to find in grocery stores since they’re fragile and highly perishable, but dried mulberries are increasingly available and retain their mineral content well.
Blackberries provide 13 to 29 mg per 100 grams, and a full cup delivers around 42 mg. That’s modest compared to figs or mulberries, but blackberries are easy to find year-round and pair well with other calcium-rich foods like yogurt or fortified cereal.
Citrus Fruits and Kiwi
Oranges and tangerines contribute small amounts of calcium. A small tangerine has about 26 mg, while a cup of regular orange juice from concentrate provides around 20 mg. What makes citrus interesting is the vitamin C content, which supports overall bone health even if it doesn’t dramatically boost calcium absorption on its own.
Kiwi offers about 50 mg per cup of sliced fruit, putting it ahead of most fresh fruits. Two kiwis as a snack gets you roughly 5% of your daily calcium target. That adds up over a week, especially if you’re combining kiwi with other mineral-rich foods.
Prunes and Bone Health
Prunes (dried plums) don’t contain as much calcium as dried figs, but they have a separate benefit worth knowing about. Research shows that prunes contain plant compounds called phenolics that appear to stimulate bone-building cells while slowing down bone breakdown. Clinical studies suggest that eating prunes regularly may help protect bone mineral density, particularly in postmenopausal women who are at higher risk for osteoporosis.
This means prunes contribute to bone health through a different mechanism than simply providing calcium. If you’re eating fruit specifically to support your bones, combining dried figs (for calcium) with prunes (for their bone-protective compounds) covers both angles.
Why Fruit Alone Isn’t Enough
Even the best calcium-rich fruits deliver far less per serving than dairy, fortified plant milks, or leafy greens like collards and kale. A cup of dried figs or a cup of rhubarb gives you about 300 to 350 mg, but most other fruits contribute well under 100 mg per serving. To hit your daily 1,000 to 1,200 mg target, you’d need to rely on multiple sources throughout the day.
Oxalates are the other limiting factor. Most fruits are considered low-oxalate foods (under 30 mg per 100 grams), so calcium absorption from the majority of fruits is reasonably efficient. The exceptions are star fruit, elderberry, and dried figs, which contain higher oxalate levels. Star fruit is especially high, with up to 295 mg of oxalate per 100 grams, making it a poor choice if calcium absorption is your goal.
Quick Comparison by Serving
- Dried figs, 1 cup: 300 mg
- Rhubarb, 1 cup: 348 mg
- Mulberries, 1 cup: 55 mg (fresh; dried and certain varieties can be much higher)
- Kiwi, 1 cup sliced: 50 mg
- Blackberries, 1 cup: 42 mg
- Tangerine, 1 small: 26 mg
- Orange juice (from concentrate), 1 cup: 20 mg
Calcium-fortified orange juice is in a different category entirely, delivering around 300 mg per 8-ounce glass. If you drink orange juice regularly and can find a fortified version, it’s one of the simplest ways to boost your intake without changing your diet much. Just check the label, since not all brands are fortified.