A medium banana has about 27 grams of carbs , including roughly 3 grams of fiber (so around 24 grams of “net” carbs).

Quick Scoop: Carbs in a Banana

  • 1 medium banana (about 118 g): around 26–27 g total carbs.
  • Of that, about 3 g is fiber , so ~23–24 g net carbs.
  • Per 100 g of banana: roughly 23–27 g carbs , depending on variety and ripeness.

By Size (Typical Ranges)

  • Small banana: about 19–23 g carbs.
  • Medium banana: about 25–27 g carbs.
  • Large banana: about 30–35 g carbs.

Most of these carbs are natural sugars (glucose, fructose, sucrose) plus some starch and fiber, which is why bananas are a popular quick-energy snack.

Information gathered from public forums or data available on the internet and portrayed here.