Plantains serving size, cups to grams
Here a serving of plantains is counted as 1 cup (sliced), which USDA weighs at 5.2 oz (148 g), with 182 calories and 1.7 g protein. 100 g (3.5 oz) is about 2/3 cup.
Serving sizes of plantains
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cup, sliced | 5.2 oz (148 g) | 182 calories | 1.7 g | 45.8 g | 1.3 g |
| 1 plantain | 9.5 oz (270 g) | 332 calories | 3.1 g | 83.6 g | 2.4 g |
| 1 oz | 1 oz (28 g) | 35 calories | 0.33 g | 8.8 g | 0.25 g |
| 100 g | 3.5 oz (100 g) | 123 calories | 1.2 g | 31 g | 0.89 g |
Cups to grams
USDA weighs 1 cup (sliced) of plantains at 148 g. Smaller cup measures follow from it.
| Measure | Weight | Calories |
|---|---|---|
| 1 cup | 5.2 oz (148 g) | 182 calories |
| 3/4 cup | 3.9 oz (111 g) | 136 calories |
| 2/3 cup | 3.5 oz (99 g) | 121 calories |
| 1/2 cup | 2.6 oz (74 g) | 91 calories |
| 1/3 cup | 1.7 oz (49 g) | 61 calories |
| 1/4 cup | 1.3 oz (37 g) | 45 calories |
Grams and ounces to cups
| Weight | Volume | Calories |
|---|---|---|
| 1 oz | 1/4 cup | 35 calories |
| 100 g (3.5 oz) | 2/3 cup | 123 calories |
| 1 lb (454 g) | 3 1/8 cups | 557 calories |
What 3.5 oz (100 g) of plantains looks like
3.5 oz (100 g) of plantains is 3.5 oz, or about 2/3 cup or 1/3 plantain. It has 123 calories, 1.2 g protein, 31 g carbs and 0.89 g fat. One plantain weighs 9.5 oz (270 g).
Keep exploring
Sources
Weights and nutrition: USDA FoodData Central, food portions and nutrients (FoodData Central, April 2026 release, accessed 2026-10-14)
- Raw plantains (ripe): Plantains, ripe, raw, FDC ID 2710817 (Foundation Foods, published 2024-10-31)
- Kitchen measures (1 cup = 16 tbsp, 1 tbsp = 3 tsp): NDSU Extension, Ingredient Substitutions (FN198, J. Garden-Robinson, April 2013 edition). https://www.extension.purdue.edu/extmedia/HHS/HHS-784-W.pdf (accessed 2026-10-12)
How we calculate: each household measure is the gram weight USDA lists for this food. Calories and nutrients are the USDA values per 3.5 oz (100 g) scaled to that weight. 1 oz = 28.35 g and 1 lb = 453.6 g. Cup fractions are rounded to the nearest kitchen measure. A dash (—) means USDA reports no value. How we verify.