Melba toast serving size and weights
Here a serving of melba toast is counted as 1 cracker, which USDA weighs at 5 g, with 20 calories and 0.6 g protein.
Serving sizes of melba toast
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cracker | 5 g | 20 calories | 0.6 g | 3.8 g | 0.16 g |
| 1 melba toast | 5 g | 20 calories | 0.6 g | 3.8 g | 0.16 g |
| 1 crostini | 5 g | 20 calories | 0.6 g | 3.8 g | 0.16 g |
| 1 oz | 1 oz (28 g) | 111 calories | 3.4 g | 21.7 g | 0.91 g |
| 100 g | 3.5 oz (100 g) | 390 calories | 12.1 g | 76.6 g | 3.2 g |
What 3.5 oz (100 g) of melba toast looks like
3.5 oz (100 g) of melba toast is 3.5 oz, or about 20 crackers. It has 390 calories, 12.1 g protein, 76.6 g carbs and 3.2 g fat. One cracker weighs 5 g.
How much melba toast for 30 g of protein
There is 12.1 g of protein in 3.5 oz (100 g) of melba toast, so 30 g of protein would take 8.7 oz (248 g), with 967 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 2026-10-15)
- Melba toast: Melba toast, FDC ID 2707702 (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.