How Many Grams in a Cup of Sour Cream? (242 g)
1 US legal cup of Sour Cream = 242 grams (8.54 ounces). One tablespoon = 15.13 grams, and one teaspoon = 5.04 grams.
Portion baseline measured as 1 cup according to official USDA laboratory reference testing.
Sour Cream: Fractional Cup to Grams Conversion Table
| Portion / Fraction | Grams (g) | Ounces (oz) | Equivalent Tablespoons |
|---|---|---|---|
| 1/8 cup | 30.3 g | 1.07 oz | 2 tbsp |
| 1/4 cup | 60.5 g | 2.13 oz | 4 tbsp |
| 1/3 cup | 80.7 g | 2.85 oz | 5.3 tbsp |
| 1/2 cup | 121 g | 4.27 oz | 8 tbsp |
| 2/3 cup | 161.3 g | 5.69 oz | 10.7 tbsp |
| 3/4 cup | 181.5 g | 6.4 oz | 12 tbsp |
| 1 cup | 242 g | 8.54 oz | 16 tbsp |
| 1 1/2 cups | 363 g | 12.81 oz | 24 tbsp |
| 2 cups | 484 g | 17.08 oz | 32 tbsp |
| 3 cups | 726 g | 25.62 oz | 48 tbsp |
| 4 cups | 968 g | 34.16 oz | 64 tbsp |
Interactive Sour Cream Converter
Type any amount or choose a unit to calculate instant weights and volumes
Why the Weight of Sour Cream Varies in Baking
Liquid oils have a density of ~0.92 g/mL, making them lighter than water (1.00 g/mL) and whole milk (1.03 g/mL). Temperature slightly alters volume expansion, but mass in grams remains constant.
Fats & Dairy Measuring Technique
Scoop into dry measuring cup and tap firmly on counter to collapse internal air pockets, then sweep level with a spatula.
Atmospheric Altitude Context
At 5280 ft elevation, lower atmospheric pressure accelerates moisture evaporation. Ensure Sour Cream is measured strictly by weight (242g/cup) rather than volume scoop to prevent baking inconsistencies.
International Cup Size Weights for Sour Cream
Standard cup volumes vary between countries. If following a UK, Australian, or Canadian recipe, use these computed gram equivalents for Sour Cream:
| Standard Cup Standard | Volume (mL) | Calculated Grams (g) | Ounces (oz) | Primary Geographic Region |
|---|---|---|---|---|
| US Legal Cup (USDA Standard) | 240 mL | 242 g | 8.54 oz | United States (FDA nutrition labeling) |
| US Customary Cup | 236.6 mL | 238.6 g | 8.42 oz | United States (Standard kitchen measuring sets) |
| Metric Cup | 250 mL | 252.1 g | 8.89 oz | Australia, New Zealand, Canada, South Africa, UK |
| Imperial Cup | 284.1 mL | 286.5 g | 10.11 oz | Traditional British & Commonwealth recipes (1/2 pint) |
Related Fats & Dairy Conversions
Frequently Asked Questions About Sour Cream
How do stick markings on butter translate to cups and grams?
In the United States, 1 standard stick of butter equals 1/2 cup (8 tablespoons), weighing 113.5 grams (4 ounces). Two full sticks equal 1 US cup, weighing exactly 227 grams (8 ounces). One level tablespoon weighs 14.2 grams.
Does melted Sour Cream weigh the same as solid Sour Cream?
Yes, total mass does not change with phase or temperature: 242 grams of solid Sour Cream remains exactly 242 grams after melting. However, volume can change slightly due to thermal expansion. Measuring by weight on a gram scale prevents melted-versus-solid volume discrepancy entirely.
Why must liquid fats and milks be measured at eye level?
Viewing a liquid measuring cup from above produces optical parallax error, causing you to over-measure liquids by 1 to 2 tablespoons. Always rest your measuring cup on a flat countertop, crouch down so your eye is level with the line, and align the bottom of the meniscus.
Can I substitute salted for unsalted butter in baking?
Yes, but adjust your recipe's added salt. Commercial salted butter contains approximately 1.5% to 1.7% salt by weight (about 1/4 teaspoon fine salt per 1/2 cup stick). If using salted butter, decrease the added table salt in your recipe by 1/4 teaspoon per stick used.
How does fat percentage affect baking moisture?
Dairy fats are emulsions of water, fat, and milk solids. Standard butter is ~80% butterfat and ~16-18% water, while whole milk is ~88% water. Swapping low-fat alternatives alters the total liquid balance and crumb tenderness of delicate pastries.
Authoritative Laboratory Citation: USDA SR Legacy
Exact 100% agreement between USDA SR Legacy and King Arthur Baking weight chart: 1 cup = 242g.