1 fl oz
1 kcal
30 g
Beveragesmoderate variability
Energy drink, sugar free (Rockstar): calories and nutrition
Energy drink, sugar free (Rockstar) has about 19 calories per USDA reference amount in the cited USDA reference record. Use the portion controls and preparation factors below to interpret the estimate.
What this number means
A portion-aware estimate, not a promise
A USDA reference amount weighing 480 grams has about 19 calories in the cited source record.
The listed household measures span roughly 1–29 calories across the listed portions. That range describes the source portions below; it is not a confidence interval and does not capture every recipe.
Calculated from the smallest and largest usable household measures listed by USDA for this exact FNDDS record; not a confidence interval.
Portion explorer
See how portion size changes the estimate
Move the slider to scale the source values. This is a mathematical comparison, not an analysis of your exact plate.
- Calories
- 19 kcal
- Protein
- 1.2 g
- Carbohydrate
- 3.4 g
- Total fat
- 0.4 g
Household measures
Compare listed portions
These values scale the source nutrition by gram weight. Rounding keeps the comparison readable.
1 cup
10 kcal
240 g
1 can (8 fl oz)
10 kcal
240 g
1 can or bottle (16 fl oz)
19 kcal
480 g
1 can (24 fl oz)
29 kcal
720 g
At a glance
Nutrient highlights per source serving
The strongest supplied Daily Value signals, shown without extrapolating missing values.
Sodium
249.6 mg≈ 11% Daily ValueCalcium
62.4 mg≈ 5% Daily ValueMagnesium
14.4 mg≈ 3% Daily ValueSource-serving signals
What stands out in this record
These observations are calculated from the cited USDA reference amount. They describe the database serving, not a measurement or recommendation for your plate.
- The representative USDA portion contains 250 mg sodium, about 11% of the Daily Value used on U.S. labels.
Nutrition facts
Compare the source serving with 100 grams
Values are rounded for readability. The source serving is 480 g.
| Nutrient | Amount | Approx. % Daily Value |
|---|---|---|
| Calories | 19 kcal 4 kcal | — |
| Protein | 1.2 g 0.3 g | — |
| Carbohydrate | 3.4 g 0.7 g | — |
| Total fat | 0.4 g 0.1 g | — |
| Dietary fiber | 0 g 0 g | — |
| Sugars | 0 g 0 g | — |
| Sodium | 249.6 mg 52 mg | 11% |
| Saturated fat | 0 g 0 g | — |
| Monounsaturated Fat | 0 g 0 g | — |
| Polyunsaturated Fat | 0 g 0 g | — |
| Cholesterol | 0 mg 0 mg | — |
| Potassium | 14.4 mg 3 mg | — |
| Calcium | 62.4 mg 13 mg | 5% |
| Iron | 0.1 mg 0 mg | — |
| Magnesium | 14.4 mg 3 mg | 3% |
| Vitamin C | 0 mg 0 mg | — |
| Vitamin D | 0 µg 0 µg | — |
| Vitamin A | 0 µg 0 µg | — |
| Caffeine | 158.4 mg 33 mg | — |
| Alcohol | 0 g 0 g | — |
| Water | 472.3 g 98.4 g | — |
Daily Values appear only when they are supplied by the reviewed data record. Individual needs differ.
Inside the source record
Source formulation behind this USDA record
USDA links this survey-food entry to one source input used to calculate the reference nutrition. Publishing those inputs makes the record easier to inspect and helps explain why two similarly named foods can have different values.
How to read this
A single-source formulation
Beverages, Energy drink, ROCKSTAR, sugar free is the only listed source input for this record. That does not mean every real-world version is identical; brands, preparation, water content, and portion weight can still differ.
100 g total listed input weight across the formulation.
| # | USDA input | Listed amount | Input weight | Share of listed input weight |
|---|---|---|---|---|
| 1 | Beverages, Energy drink, ROCKSTAR, sugar freeUSDA ingredient 14630 | 100 GM | 100 g | 100% |
What changes the estimate most?
This is a standardized USDA survey-food profile, not a measurement of every preparation. Actual nutrition can change with drink size, recipe or formulation, milk or cream, sweeteners and add-ins.
Food estimates can be sensitive to portion weight, preparation, ingredient ratios, and additions that are difficult to judge from appearance alone.
- 01
drink size
- 02
recipe or formulation
- 03
milk or cream
- 04
sweeteners and add-ins
How we estimated this
Traceable back to the source record
This profile uses FoodData Central Survey Foods (FNDDS). It reports the source serving, calculates the 100-gram comparison from the same record, and scales household portions by their listed gram weights.
About the serving label: USDA describes the underlying portion as “Typical reported amount.” We display it as “USDA reference amount” to make clear that it is a database comparison point—not a suggested portion or a claim about what most people should eat.
Data cycle: 2021–2023, published 2024-10-31
FoodData Central ID: 2710764
FNDDS food code: 95312700
It does not reconstruct every possible recipe or infer your plate’s weight. Preparation and recipe differences belong in the uncertainty explanation, not hidden decimal places.
Source release 2024-10-31. Read the full nutrition methodology.