Strawberries are packed with vitamin C, folate, and smaller amounts of several other vitamins and minerals. A single cup of halved strawberries (about 150 grams) delivers roughly 90 mg of vitamin C, which covers your entire daily requirement. But vitamin C is just the starting point.
Vitamin C: The Standout Nutrient
Fresh strawberries contain about 60 mg of vitamin C per 100 grams, making them one of the richest fruit sources of this nutrient. That means a generous handful easily meets your daily needs. Vitamin C supports your immune system, helps your body absorb iron from plant foods, and plays a key role in building collagen, the protein that keeps your skin, joints, and blood vessels strong.
What makes strawberries particularly useful is that their vitamin C works alongside natural plant pigments called anthocyanins (the compounds responsible for the red color). Both act as antioxidants, meaning they neutralize harmful molecules that can damage cells. These compounds are well correlated in strawberries: when one is present in high amounts, the others tend to be as well, creating a combined protective effect that’s greater than any single nutrient alone.
Folate: An Underrated Strength
Strawberries are a surprisingly good source of folate (vitamin B9). Depending on the variety, fresh strawberries contain between 30 and 69 micrograms of folate per 100 grams. A serving of about 250 grams, roughly a large bowl, supplies around 125 micrograms. That’s about 30% of the U.S. daily recommendation of 400 micrograms.
Folate is essential for cell division and DNA synthesis, which makes it especially important during pregnancy. Adequate folate intake helps prevent neural tube defects in developing babies. Beyond pregnancy, good folate status is linked to heart health, cognitive function, and a lower risk of certain cancers. For people who don’t eat a lot of leafy greens or legumes, strawberries offer a pleasant way to boost folate intake.
Other Vitamins and Minerals
Beyond the two headliners, strawberries contribute several other nutrients in meaningful amounts:
- Manganese: Eight medium strawberries (about 144 grams) provide more than 20% of the daily adequate intake for this mineral. Manganese supports bone health and helps your body process carbohydrates and cholesterol.
- Potassium: A cup of halved strawberries contains about 233 mg of potassium, which helps regulate fluid balance and supports normal blood pressure.
- Small amounts of B vitamins: Strawberries contain traces of B6, thiamin (B1), and riboflavin (B2). These won’t cover a large share of your daily needs on their own, but they add up as part of a varied diet.
- Vitamin K: Present in small quantities, vitamin K plays a role in blood clotting and bone metabolism.
Strawberries are also low in calories (about 50 per cup) and high in fiber, which makes them nutrient-dense relative to their size. You get a lot of vitamins per calorie.
How Storage Affects Vitamin Content
The vitamins in your strawberries depend heavily on how you store them. Vitamin C is especially fragile. In one study, fresh strawberries started at about 61 mg of vitamin C per 100 grams. After just five days at room temperature, that dropped to roughly 7.5 mg, a loss of nearly 88%. The decline is steep and consistent: about 14 to 15% of vitamin C disappears each day at room temperature. After a week on the counter, almost none remains.
Refrigeration slows this dramatically. After five days in the fridge, strawberries retained about 43 mg per 100 grams, roughly 70% of their original vitamin C. Even after 11 days of refrigeration, they still held about 38 mg, losing less than 40% overall. The takeaway is simple: refrigerate your strawberries as soon as you bring them home, and eat them within a few days for the best nutritional payoff.
Fresh vs. Frozen: Less Difference Than You’d Think
Frozen strawberries preserve their vitamin C well in the first few days of freezing, losing only about 1 mg per 100 grams after the first day. Over a full week, frozen berries lose roughly half their vitamin C, which sounds like a lot until you compare it to what happens on your counter.
A large study comparing fresh, refrigerated (“fresh-stored”), and commercially frozen fruits and vegetables found no significant differences in vitamin C, provitamin A, or folate content in the majority of comparisons. When differences did appear, frozen produce actually outperformed refrigerated produce more often than the reverse. This challenges the common assumption that fresh is always more nutritious. If you’re buying strawberries and won’t eat them for several days, frozen may actually deliver more vitamins by the time they reach your plate.
Getting the Most From Your Strawberries
Eat strawberries raw when possible. Processing, whether it’s making jam, juice, or baked goods, reduces vitamin C, anthocyanins, and total antioxidant capacity. The more heat and time involved, the greater the loss. Blending strawberries into a smoothie is gentler than cooking, though some vitamin C still breaks down through exposure to air.
Pairing strawberries with iron-rich foods like oatmeal or spinach salads is a smart move. The vitamin C in strawberries significantly improves your body’s ability to absorb the type of iron found in plant foods. And because folate is a water-soluble vitamin, eating whole strawberries rather than drinking strained juice helps you retain more of it.