Irish soda bread serving size and weights
Here a serving of irish soda bread is counted as 1 slice, which USDA weighs at 2.6 oz (74 g), with 223 calories and 4.8 g protein.
Serving sizes of irish soda bread
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 slice | 2.6 oz (74 g) | 223 calories | 4.8 g | 37.8 g | 6.6 g |
| 1 oz | 1 oz (28 g) | 85 calories | 1.8 g | 14.5 g | 2.5 g |
| 100 g | 3.5 oz (100 g) | 301 calories | 6.5 g | 51.1 g | 9 g |
What 3.5 oz (100 g) of irish soda bread looks like
3.5 oz (100 g) of irish soda bread is 3.5 oz, or about 1 1/3 slices. It has 301 calories, 6.5 g protein, 51.1 g carbs and 9 g fat. One slice weighs 2.6 oz (74 g).
How much irish soda bread for 30 g of protein
There is 6.5 g of protein in 3.5 oz (100 g) of irish soda bread, so 30 g of protein would take 16.3 oz (463 g), with 1394 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)
- Irish soda bread: Bread, Irish soda, FDC ID 2707852 (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.