Sour cream serving size, cups to grams
Here a serving of sour cream is counted as 1 tbsp, which USDA weighs at 12 g, with 23 calories and 0.37 g protein. One cup weighs 8.1 oz (230 g).
Serving sizes of sour cream
Every household measure USDA weighs for this food, plus 1 oz and 100 g.
| Measure | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cup | 8.1 oz (230 g) | 443 calories | 7.1 g | 12.8 g | 41.4 g |
| 1 tbsp | 12 g | 23 calories | 0.37 g | 0.67 g | 2.2 g |
| 1 oz | 1 oz (28 g) | 55 calories | 0.87 g | 1.6 g | 5.1 g |
| 100 g | 3.5 oz (100 g) | 193 calories | 3.1 g | 5.6 g | 18 g |
Cups to grams
USDA weighs 1 cup of sour cream at 230 g. Smaller cup measures follow from it. Spoons use the USDA weight of 1 tbsp (12 g), and 1 tbsp = 3 tsp.
| Measure | Weight | Calories |
|---|---|---|
| 1 cup | 8.1 oz (230 g) | 443 calories |
| 3/4 cup | 6.1 oz (172 g) | 332 calories |
| 2/3 cup | 5.4 oz (153 g) | 296 calories |
| 1/2 cup | 4.1 oz (115 g) | 222 calories |
| 1/3 cup | 2.7 oz (77 g) | 148 calories |
| 1/4 cup | 2 oz (58 g) | 111 calories |
| 1 tbsp | 12 g | 23 calories |
| 1 tsp | 4 g | 8 calories |
Grams and ounces to cups
| Weight | Volume | Calories |
|---|---|---|
| 1 oz | 2.4 tbsp | 55 calories |
| 100 g (3.5 oz) | 1/2 cup | 193 calories |
| 1 lb (454 g) | 2 cups | 874 calories |
What 3.5 oz (100 g) of sour cream looks like
3.5 oz (100 g) of sour cream is 3.5 oz, or about 1/2 cup. It has 193 calories, 3.1 g protein, 5.6 g carbs and 18 g fat.
Keep exploring
Sources
Weights and nutrition: USDA FoodData Central, food portions and nutrients (FoodData Central, April 2026 release, accessed 2026-10-14)
- Sour cream (full fat): Cream, sour, full fat, FDC ID 2346387 (Foundation Foods, published 2022-10-28) · full nutrition facts
- 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.