Zucchini bread serving size and weights
Here a serving of zucchini bread is counted as 1 slice, which USDA weighs at 1.4 oz (40 g), with 122 calories and 2 g protein.
Serving sizes of zucchini bread
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 slice | 1.4 oz (40 g) | 122 calories | 2 g | 17.1 g | 5.3 g |
| 1 oz | 1 oz (28 g) | 87 calories | 1.4 g | 12.1 g | 3.7 g |
| 100 g | 3.5 oz (100 g) | 306 calories | 5 g | 42.6 g | 13.1 g |
What 3.5 oz (100 g) of zucchini bread looks like
3.5 oz (100 g) of zucchini bread is 3.5 oz, or about 2 1/2 slices. It has 306 calories, 5 g protein, 42.6 g carbs and 13.1 g fat. One slice weighs 1.4 oz (40 g).
How much zucchini bread for 30 g of protein
There is 5 g of protein in 3.5 oz (100 g) of zucchini bread, so 30 g of protein would take 21 oz (594 g), with 1818 calories. It is not a practical way to reach a protein target.
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Sources
Weights and nutrition: USDA FoodData Central, food portions and nutrients (FoodData Central, April 2026 release, accessed 2026-10-14)
- Zucchini bread: Bread, zucchini, FDC ID 2707851 (FoodData Central survey (FNDDS) 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.