How Much Calcium Is In Mozzarella Cheese? | Dairy Power

You probably know cheese contains calcium. The question is how much, and whether mozzarella — one of the most popular cheeses in the US — delivers enough to count toward your daily bone health goals. Mozzarella’s soft texture and mild flavor lead some people to assume it’s lower in calcium than hard, aged cheeses. That assumption misses something useful.

A single ounce of mozzarella provides roughly the same calcium as a similar-size slice of cheddar. But unlike harder cheeses, mozzarella comes in several forms — fresh, whole‑milk, part‑skim — and the calcium content shifts with each. Known numbers make it easy to fit into your daily intake.

Mozzarella’s Calcium Content: What the Numbers Show

The most commonly cited figure comes from UCSF Health’s calcium food table: one ounce (28 grams) of mozzarella contains about 200 mg of calcium. That’s roughly 20% of the Daily Value based on a 2,000‑calorie diet.

But not all mozzarella is the same. Whole‑milk mozzarella tends to be richer, with some sources reporting up to 222 mg per ounce. Part‑skim mozzarella drops slightly to about 183 mg per ounce because removing fat also removes a small amount of the water‑soluble calcium fraction.

Fresh mozzarella — the soft white balls packed in whey or water — is a different story. A three‑ounce serving from a university dining label contained 663 mg of calcium, more than half the Daily Value in one portion. That figure depends on the brand and preparation, but it shows fresh mozzarella can be surprisingly high.

Why the Type of Mozzarella Matters for Your Calcium Goal

If you’re trying to hit a specific calcium target — say, 1,000 mg per day for most adults — a small difference per ounce adds up fast when you eat cheese regularly. Choosing whole‑milk over part‑skim adds roughly 40 mg per ounce. Choosing fresh over low‑moisture changes the water content and serving size, which changes the calcium density.

• Whole‑milk, low‑moisture mozzarella: The standard pizza cheese. About 200–222 mg calcium per ounce. Dense, melts well, and consistent across most brands.
• Part‑skim mozzarella: Lower in fat, slightly lower in calcium. Around 183 mg per ounce. Common in “light” or reduced‑fat recipes.
• Fresh mozzarella: Higher moisture, but per serving can deliver more calcium because people tend to eat larger portions. A 3‑ounce ball gives 600+ mg.
• Smoked or specialty mozzarella: Calcium content similar to whole‑milk unless the smoking process adds sodium, which doesn’t affect calcium.

If you’re tracking calcium for bone health or osteoporosis prevention, the type of mozzarella you buy directly changes how much of your daily target each string cheese stick or salad topping covers.

Comparing Mozzarella to Other Calcium Sources

Mozzarella is often compared to cheddar, and the numbers are nearly identical: both hover around 200 mg per ounce. Swiss and Gruyere beat mozzarella by a significant margin, delivering about 270 mg per ounce. Parmesan, despite being hard, provides only about 70 mg per tablespoon — less per serving because a tablespoon weighs much less than an ounce.

A 2023 study published in PMC confirmed that mozzarella contributes meaningfully to dietary calcium and magnesium intake. It’s also worth noting how mozzarella stacks up against milk. An eight‑ounce glass of low‑fat milk contains 300 mg of calcium, while one ounce of mozzarella delivers about 200 mg — cheese is roughly twice as calcium‑dense by weight. That comparison comes from the milk vs cheese calcium density sheet from ECU Health Physicians.

Cheese Type	Calcium per Ounce	Calcium per 100g
Mozzarella (whole‑milk)	200–222 mg	700–780 mg
Mozzarella (part‑skim)	183 mg	645 mg
Cheddar	200 mg	705 mg
Swiss	270 mg	950 mg
Parmesan	71 mg (per 1 tbs)	1,180 mg

Per ounce, mozzarella holds its own against hard cheeses. Parmesan is high per 100 grams but you rarely eat that much in one sitting. Mozzarella’s advantage is that people commonly eat one to two ounces at a time, making it an easy calcium contributor.

Ways to Boost Calcium Intake with Mozzarella

Knowing the numbers helps, but the bigger question is how to use mozzarella practically to support your calcium intake. A few straightforward strategies make it easy to add 200–400 mg per day without overhauling your diet.

1. Use part‑skim string cheese as a portable snack. One stick provides roughly 200 mg calcium. Pair it with a handful of almonds for added magnesium and vitamin E.
2. Top salads or soups with shredded fresh mozzarella. Half a cup of fresh mozzarella pearls gives around 300 mg calcium and adds protein without heavy calories.
3. Make mozzarella a regular pizza or pasta topping. A typical slice of cheese pizza contains about 1.5 ounces of mozzarella, delivering roughly 300 mg calcium. The tomato sauce also adds a small amount.
4. Try caprese salads with high‑quality fresh mozzarella. A 4‑ounce ball plus basil and tomatoes provides around 440 mg calcium — nearly half the daily target for many adults.

These strategies work because mozzarella is versatile and mild. It integrates into meals where other calcium sources like milk or yogurt might not fit as naturally.

How Mozzarella Fits Into a Bone‑Healthy Diet

Calcium from dairy foods is well‑absorbed because dairy contains lactose and casein, both of which enhance absorption. A 2023 study from the National Institutes of Health examined essential elements in mozzarella and concluded it can “contribute significantly to the dietary intake of calcium and magnesium.” The full mozzarella dietary calcium study explored how calcium balance during production affects both nutrition and texture.

For people following a dairy‑free diet, mozzarella is obviously off the table. But for those who tolerate dairy, it’s a practical and palatable way to hit calcium goals. The International Osteoporosis Foundation includes mozzarella on its list of calcium‑rich foods for bone health.

Serving	Calcium (approx)	% Daily Value
1 oz string cheese	200 mg	20%
3 oz fresh mozzarella ball	660 mg	66%
½ cup shredded mozzarella	145 mg	15%

Individual needs vary, but for most adults, one serving of mozzarella provides a solid 20% towards the typical 1,000 mg daily recommendation. Post‑menopausal women and older adults often need 1,200 mg, so two servings could get you a third of the way there.

The Bottom Line

Mozzarella delivers roughly 200 mg of calcium per ounce, making it a comparable calcium source to cheddar and a more concentrated option than milk by weight. The type matters: whole‑milk and fresh varieties offer higher numbers than part‑skim. For anyone aiming to support bone density or meet calcium targets, mozzarella is a flexible, widely available choice.

Your doctor or a registered dietitian can help match your calcium intake to your age, sex, and any bone‑health concerns like osteopenia — and they’ll know which mozzarella type fits your overall eating pattern.