Is Banana keto?
Not keto-friendly 23.8 g net carbs per one medium banana (118 g) — 119% of a 20 g keto day.
Short answer: Not in normal portions. One medium banana (118 g): 23.8 g net carbs — 119% of a strict 20 g keto day — with 0.4 g fat and 1.3 g protein.
A single medium banana carries more net carbs than most keto plans allow for an entire day. Riper bananas convert more starch to sugar, so the spotty one on the counter is the worst option of all.
How banana fits a keto carb budget
One serving is 23.8 g net carbs — 119% of a 20 g day. Even half a serving uses 60% of the budget.
Worked example. 118 g of banana = 26.9 g total carbs − 3.1 g fibre = 23.8 g net carbs, 0.4 g fat, 1.3 g protein and 105 kcal.
If you still want some, plan it: a strict day is 20 g, and how net carbs are counted explains why the fibre here does not rescue it.
Nutrition facts
| Nutrient | Per 100 g | Per one medium banana (118 g) |
|---|---|---|
| Calories | 89 kcal | 105 kcal |
| Fat | 0.3 g | 0.4 g |
| Protein | 1.1 g | 1.3 g |
| Total carbohydrate | 22.8 g | 26.9 g |
| Fibre | 2.6 g | 3.1 g |
| Net carbs | 20.2 g | 23.8 g |
Where the energy comes from:
How to eat banana on keto
- For smoothies, frozen avocado or a spoon of nut butter gives the same creaminess.
- Banana extract adds the flavour to keto baking with no carbs.
Lower-carb swaps
| Swap | Net carbs / serving | Saves |
|---|---|---|
| Strawberries (five large strawberries) | 5.1 g | 18.7 g |
| Raspberries (half a cup) | 3.3 g | 20.5 g |
| Avocado (half a medium avocado) | 1.3 g | 22.5 g |
Compared with other fruits
Banana ranks #15 of 15 fruits in our database by net carbs per 100 g (lowest first). Berries and avocado fit; most sweet fruit uses a whole day of carbs in one serving.
| Food | Net carbs / 100 g | Per serving |
|---|---|---|
| Avocado | 1.8 g | 1.3 g |
| Olives | 3.1 g | 1.4 g |
| Blackberries | 4.3 g | 3.1 g |
| Raspberries | 5.4 g | 3.3 g |
| Strawberries | 5.7 g | 5.1 g |
| Coconut (fresh flesh) | 6.2 g | 2.8 g |
See all fruits ranked by net carbs →
Frequently asked questions
How many net carbs are in banana?
Banana has about 20.2 g of net carbs per 100 g (22.8 g total carbohydrate minus 2.6 g fibre), and about 23.8 g per one medium banana (118 g).
Can you eat banana on keto?
Not in normal portions. One one medium banana contains 23.8 g net carbs, 119% of a strict daily limit.
Values are per 100 g of the raw or stated food, rounded, from USDA FoodData Central. Brands and varieties differ — check the label for packaged products.