Most fresh fruits contain between 5 and 30 grams of carbohydrates per serving, with berries and melons at the low end and bananas and grapes near the top. The exact number depends on the type of fruit, how ripe it is, and whether you’re eating it fresh, dried, or as juice.
Carbs in Common Fruits by Serving
Here’s a practical breakdown of carbohydrate content for fruits you’re most likely to eat. These values reflect available carbohydrates, meaning the carbs your body actually digests and absorbs (excluding fiber).
- Watermelon (1 cup): 11 g carbs
- Orange (1 medium): 11 g carbs
- Pear (1 medium): 11 g carbs
- Apple (1 medium): 15 g carbs
- Pineapple (½ cup): 19 g carbs
- Banana (1 cup, sliced): 24 g carbs
The serving sizes here matter. A cup of watermelon weighs about 280 grams, nearly double the weight of a cup of most other fruits, yet still comes in at just 11 grams of carbs because watermelon is mostly water. A medium apple at roughly 180 grams lands at 15 grams. So weight alone doesn’t predict carb count; water content plays a huge role.
Lowest-Carb Fruits
If you’re watching your carbohydrate intake closely, some fruits are surprisingly low. Per half-cup serving:
- Casaba melon: 5.5 g
- Watermelon: 5.5 g
- Strawberries: 6.5 g
- Cantaloupe: 6.5 g
- Avocado: 6.5 g
- Cranberries: 6.5 g
Berries in general are your best bet for keeping carbs low. Raspberries pack 8 grams of fiber per cup, which offsets a large portion of their total carbohydrate content. If you’re calculating net carbs (total carbs minus fiber), raspberries and blackberries drop to some of the lowest numbers of any fruit.
How Ripeness Changes the Carb Count
The carbs in a piece of fruit aren’t fixed. They shift as the fruit ripens, and the change can be dramatic. In a green banana or plantain, starch makes up about 80% of the dry weight while sugars account for just 1.3%. By the time that same fruit is fully ripe, sugars climb to around 17% of dry weight. The starch literally converts into sugar as the fruit sits on your counter.
USDA research on bananas confirms this pattern in detail. Unripe bananas contain roughly 18 grams of fiber per 100 grams when measured with modern methods that capture resistant starch (a type of starch your body can’t fully digest). As the banana ripens, that number drops to 4 or 5 grams, and in overripe bananas it falls to about 2 grams. Meanwhile, fructose, glucose, and total sugar all jump significantly from unripe to ripe.
What this means practically: a green-tipped banana has fewer digestible carbs than a spotted, soft one, even though they weigh the same. If you’re managing blood sugar, choosing slightly less ripe fruit gives you a measurable advantage.
Dried Fruit Is a Carb Trap
Drying fruit removes water but leaves all the sugar behind, concentrating it dramatically. One hundred grams of fresh apple contains about 10 grams of sugar. The same weight of dried apple contains 57 grams. That’s nearly six times the sugar, gram for gram.
The problem isn’t just concentration. It’s portion size. A handful of dried mango or raisins is easy to eat in a minute, but it contains the sugar of several pieces of whole fruit. Juice creates a similar issue: you lose the fiber that slows digestion and end up drinking the sugar of three or four oranges in a single glass. If carb count matters to you, fresh whole fruit is always the better choice over dried or juiced versions.
Why Fruit Carbs Affect Blood Sugar Differently
Not all carbohydrates hit your bloodstream at the same speed. The glycemic index (GI) measures how quickly a food raises blood sugar on a scale of 0 to 100, with pure glucose at the top. Foods scoring 55 or below are considered low-GI. Most whole fruits fall in this range:
- Pear: GI of 38
- Apple: GI of 39
- Orange: GI of 42
- Banana: GI of 55
- Pineapple: GI of 58 (moderate)
- Watermelon: GI of 76 (high)
Watermelon’s high GI looks alarming, but there’s a more useful number: glycemic load (GL), which factors in how many carbs are actually in a serving. Watermelon’s GL is just 8 per cup because there aren’t that many carbs in a typical portion. Compare that to banana at a GL of 13 per cup. A GL of 10 or below is considered low, so most fruits in normal portions have a modest impact on blood sugar.
Fiber is the main reason whole fruit behaves differently than sugar from a candy bar. It slows digestion, which means glucose enters your bloodstream gradually rather than all at once. Pears, for instance, deliver 5.5 grams of fiber per medium fruit, which helps explain their very low glycemic load of 4. The physical structure of the fruit, the cell walls and pulp, also slows the release of sugar in ways that juice and dried fruit can’t replicate.
How Your Body Handles Fruit Sugar
Fruit sugar is roughly half fructose and half glucose, and your body processes them through different pathways. Glucose enters the bloodstream directly and gets used by cells throughout your body for energy. Fructose takes a detour through the liver first, where a specific enzyme kicks off its metabolism.
Research from the National Institute of Diabetes and Digestive and Kidney Diseases found that both fructose and glucose can promote fat buildup in the liver, but through different mechanisms. In animal studies, fructose consumption increased the activity of the enzyme responsible for the first step of fructose processing, and was linked to poorer metabolic outcomes than glucose alone.
Before you swear off fruit, though, context matters enormously. These metabolic concerns apply primarily to large amounts of added fructose, like the kind found in sweetened beverages. Whole fruit delivers fructose in small doses packaged with fiber, water, and nutrients that slow absorption. The amount of fructose in two or three servings of fruit per day is far below the threshold that causes problems in research settings.
Practical Carb Counts for Different Goals
Your reason for counting carbs shapes which fruits work best for you. On a standard ketogenic diet (under 20 to 50 grams of carbs per day), half a cup of strawberries or watermelon at 5.5 to 6.5 grams fits comfortably. A whole banana at 24 grams of available carbs could use up most of your daily allowance.
For general blood sugar management, prioritize fruits with low glycemic loads: pears (GL of 4), oranges (GL of 5), and apples (GL of 6) are all solid choices. Pair any fruit with a source of protein or fat, like nuts or yogurt, to further blunt the blood sugar response.
If you’re not restricting carbs and just want to understand what you’re eating, the simplest rule is this: berries and melons are lowest, citrus and stone fruits sit in the middle, and tropical fruits like bananas, mangoes, and pineapple are highest. Dried fruit and juice multiply the carb count of any fruit several times over, so treat them as different foods entirely.