How Much Sugar is in a Banana and is it Bad For You?

How Much Sugar is in a Banana and is it Bad For You?

Bananas are the most popular fresh fruit in the United States — and for good reason. They’re portable, tasty, and have many nutrients like potassium, vitamin B6, vitamin C, magnesium, copper, and fiber. Each medium banana provides 105 calories and 27 grams of carbs, including about 14 grams of fruit sugars. It’s that sugar — naturally found in bananas — that makes some people question whether they should swap out these beloved fruits. But before you sour on bananas, let’s look at their nutrition content in more detail.

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How Many Grams of Sugar Are in a Banana?

The amount of sugar depends on the size of the fruit:

  • There are 14.4 grams of sugar in one medium banana
  • An extra-large banana has 18.6 grams
  • An extra-small banana has 9.9 grams

All of this sugar is naturally occurring. So don’t lump it in with the processed sugars found in foods like regular sodas, cakes, and candies, says Andrea N. Giancoli, MPH, RD, registered dietitian and Openfit Nutrition Manager.

“We should not not have bananas because they have sugar in them,” she says. “There are lots of different nutrients in the banana that our bodies are designed to digest and utilize. Bananas can be a good source of potassium, a nutrient of concern, according to the USDA 2015-2020 Dietary Guidelines for Americans. That means we’re not getting enough.”

A large banana contains 487 mg of potassium. While there’s 905 mg of the essential mineral in a medium potato, “Americans eat a lot of bananas so they do lend a meaningful amount of potassium to our diets,” explains Giancoli.

Our bodies are well-equipped to handle the natural sugar in a banana and other types of fruit.

“Just eat the banana,” she says. “That’s how we’re intended to have sugar in food — versus as added sugars which are often ultra-processed foods. Don’t shun fruit because it has natural sugars. It should be a part of everyone’s healthful diet.”


how much sugar in bananas- banana

Do Ripe Bananas Have More Sugar?

If you’ve ever eaten a slightly green banana or one that’s brown and mushy, you know there is a difference in how bananas taste based on their color. That is due to the natural ripening process.

“As a banana ripens, some of its starch turns to sugar,” says Giancoli. “The more ripe it is, the more sugar it’s going to have in it and the less resistant starch and more pectin you’re going to get.”

But, she reiterates that it’s imperative to remember those are naturally occurring sugars — and the sugar in fruit is not “bad” for you. If you prefer the taste and texture of bananas when they are less ripe, eat them when they are a little green. But if you like them sweeter and softer, there’s no reason to pass over a ripe banana as part of your healthy diet. You can even use ripe bananas in place of added sugars in foods like yogurt, oatmeal, and baked goods.


Are bananas OK for people with diabetes to eat?

“Bananas definitely can be part of a healthful diet for someone who’s trying to manage their blood sugar,” says Giancoli. “They’re not that high on the glycemic index because of the resistant starch and pectin that dampen that blood sugar rise.”

Those living with diabetes “should be eating a healthful diet that ought to include fruits” like bananas — if that’s a fruit they like to eat, says Giancoli. (If you have diabetes consult your health professionals and registered dietitian before making changes to your diet)

how much sugar is in a banana- banana on counter

What fruit is the highest in sugar?

Dates are among the sweetest fruits, says Giancoli. One medjool date contains 16 grams of sugar.

While a single date contains a similar amount of sugar as banana, “You get a lot more from a banana, including more to eat,” she adds. “A banana is more nutrient-dense than a date in comparison.”


Which fruit has the least amount of sugar?

On the flip side, these low-glycemic fruits contain far less sugar than dates. Technically, unripe (green) jackfruit is a fruit that contains less than 2 grams of sugar per 100-gram serving, but it’s usually not eaten as a fruit (but as a vegan meat swap). However, when a jackfruit ripens, it contains nearly 10 times as much sugar at 19 grams per 100-gram serving.

Stepfanie Romine


Stepfanie Romine is a yoga teacher (RYT 500), ACE-certified health coach and fitness nutrition specialist who writes about natural health, plant-based cooking and yoga. A runner and hiker based in Asheville, N.C., her books include The No Meat Athlete Cookbook and Cooking with Healing Mushrooms. Follow her on Twitter.