Many fruits and vegetables carry more carbohydrates than people expect. A single medium baked russet potato packs 37 grams of carbs, and a cup of mango pieces has about 25 grams. Whether you’re managing blood sugar, following a lower-carb eating pattern, or just curious about what’s on your plate, knowing which produce items sit at the top of the carb spectrum can help you plan meals more intentionally.
Starchy Vegetables With the Most Carbs
Starchy vegetables are in a category of their own. Harvard Health Publishing notes that root vegetables are “so high in carbohydrates that they are more like grains than greens.” The biggest contributors are potatoes, sweet potatoes, corn, peas, and parsnips. A medium baked russet potato with skin contains about 37 grams of carbs and 170 calories. A medium baked sweet potato comes in lower at roughly 24 grams of carbs and 100 calories, with slightly more fiber.
Plantains are another standout. A single raw yellow plantain contains about 86 grams of carbohydrate, making it one of the most carb-dense items in the entire produce aisle. Yams and sweet potatoes deliver about 15 grams of carbs per half cup, which the CDC considers one “carbohydrate choice” for people tracking their intake. Parsnips fall into that same bracket: half a cup equals one carb choice.
Not all root vegetables are created equal, though. A cup of chopped raw carrots has only 12 grams of carbs, and a large cooked onion has about 13 grams. These are still higher than leafy greens or cucumbers, but they’re a different story from potatoes.
Root Vegetables vs. Non-Starchy Vegetables
The dividing line between “high-carb” and “low-carb” vegetables is largely about starch. Potatoes, corn, peas, and winter squash store energy as starch granules, which your body breaks down into glucose quickly. Non-starchy vegetables like spinach, broccoli, bell peppers, and zucchini contain far fewer carbs per serving, often under 5 grams per cup. If you’re watching your carb intake, the biggest shifts come from swapping starchy vegetables for non-starchy ones rather than avoiding vegetables altogether.
Fruits With the Highest Carb Counts
Among fresh, whole fruits, mangoes, grapes, cherries, bananas, and pears are the heaviest hitters. A cup of mango pieces has about 25 grams of carbs. A cup of sweet cherries comes in around 22 grams, and a cup of pear slices has about 21 grams. Lychees are surprisingly carb-dense at over 31 grams per cup.
Tropical fruits tend to carry more sugar and total carbs than temperate ones. Pineapple has about 16 grams of sugar per cup of chunks. Persimmons pack over 31 grams of carbs in a single fruit. Passion fruit delivers about 55 grams per cup, though that includes a large amount of fiber from the seeds.
On the lower end, starfruit has under 9 grams of carbs per cubed cup, and papayas come in at about 16 grams per cup. Fresh figs land around 12 grams per large fig.
How Dried Fruit Changes the Math
Drying fruit removes water but leaves all the sugar behind, concentrating the carbs dramatically. A cup of fresh grapes has about 15 grams of sugar. Turn those grapes into raisins and the same volume delivers 116 grams of sugar. Calorie density jumps from 62 to over 434 calories per cup. Dehydrated apricots reach nearly 99 grams of carbs per cup.
Dates are another common example. A 2-ounce serving of dried dates contains about 40 grams of carbs. If you’re eating dried fruit by the handful, it’s easy to consume several servings’ worth of carbohydrates in minutes. Dried fruit does retain more fiber and certain antioxidants than fresh, but the portion size matters far more when carbs are a concern.
Ripeness Affects Carb Type
The total carbs in a piece of fruit stay roughly the same as it ripens, but the type of carbohydrate shifts. Bananas are the clearest example. A green banana can be 15 to 35 percent starch by weight, much of it resistant starch that your body digests slowly. As the banana yellows and develops brown spots, enzymes convert that starch into simple sugars. A fully ripe banana may contain less than 1 percent starch, with soluble sugars making up about 20 percent of the pulp’s weight. Around 80 percent of those sugars are sucrose, with glucose and fructose splitting the rest.
This is why a green banana tastes chalky and a ripe one tastes sweet, even though both have similar total carb counts. For people monitoring blood sugar, a less-ripe banana will raise glucose more gradually than a very ripe one.
Glycemic Index Adds Context
Total carbs tell you how much carbohydrate you’re eating, but the glycemic index (GI) tells you how fast it hits your bloodstream. Some high-carb produce has a surprisingly moderate GI because fiber or other factors slow digestion.
- Baked russet potato: GI of 111 (very high), glycemic load of 33 per medium potato
- Boiled white potato: GI of 82, glycemic load of 25
- Watermelon: GI of 76, but glycemic load of only 8 per cup because the carb content is low
- Dried dates: GI of 62, glycemic load of 25 per 2-ounce serving
- Pineapple: GI of 58, glycemic load of 11 per half cup
- Banana: GI of 55, glycemic load of 13 per cup
- Parsnips: GI of 52, glycemic load of only 5 per half cup
- Apple: GI of 39, glycemic load of 6
- Pear: GI of 38, glycemic load of 4
Glycemic load (GL) combines the GI with the actual amount of carbohydrate in a serving. It’s often more useful for real-world eating. Watermelon, for instance, has a high GI but a low glycemic load because you’d need to eat a lot of it to get a large carb dose. Potatoes score high on both measures, which is why they tend to spike blood sugar more than most other vegetables.
Quick Reference: High-Carb Produce
If you want a simple at-a-glance list, these are the fruits and vegetables that consistently deliver the most carbohydrates per typical serving:
- Potatoes (russet): 37 g carbs per medium baked potato
- Plantains: 86 g carbs per raw plantain
- Sweet potatoes: 24 g carbs per medium baked
- Corn, peas, parsnips: about 15 g carbs per half cup
- Mangoes: 25 g carbs per cup
- Lychees: 31 g carbs per cup
- Cherries: 22 g carbs per cup
- Bananas: 24 g carbs per cup sliced
- Pears: 21 g carbs per cup sliced
- Dried fruits (raisins, dates, dried apricots): 40 to 116 g carbs per cup, depending on type
None of these foods are “bad.” Fruits and starchy vegetables deliver vitamins, minerals, fiber, and other compounds that matter for long-term health. But if carbs are something you’re tracking, knowing which items carry the most lets you portion them intentionally rather than guessing.