Fennel seed serving size and weights
Here a serving of fennel seed is counted as 1 tsp (whole), which USDA weighs at 2 g, with 7 calories and 0.32 g protein.
Serving sizes of fennel seed
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 tbsp, whole | 5.8 g | 20 calories | 0.92 g | 3 g | 0.86 g |
| 1 tsp, whole | 2 g | 7 calories | 0.32 g | 1 g | 0.3 g |
| 1 oz | 1 oz (28 g) | 98 calories | 4.5 g | 14.8 g | 4.2 g |
| 100 g | 3.5 oz (100 g) | 345 calories | 15.8 g | 52.3 g | 14.9 g |
What 3.5 oz (100 g) of fennel seed looks like
3.5 oz (100 g) of fennel seed is 3.5 oz. It has 345 calories, 15.8 g protein, 52.3 g carbs and 14.9 g fat.
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Sources
Weights and nutrition: USDA FoodData Central, food portions and nutrients (FoodData Central, April 2026 release, accessed 2026-10-14)
- Fennel seed: Spices, fennel seed, FDC ID 171323 (SR Legacy, published 2019-04-01)
- 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.