Compare equal weights first
The answer uses the minimum and maximum across four records on the same 100 g basis. Separate can rows use each record’s own 12 fl oz portion weight. Can totals are not added together.
Sweetener and caffeine are separate choices
The records distinguish non-cola caffeine-free soda, aspartame cola with and without caffeine, and saccharin cola with caffeine. SR Legacy reflects older formulations; check a current package for its serving, sweetener and caffeine information.
USDA records: compare the same edible weight
Each reference row is per 100 g. Food states and alternatives stay separate. Additional soda rows use the recorded can weight. Missing nutrients stay Unknown; a displayed zero can be a small value rounded to one decimal.
Portion scenarios and calculation
Assumptions: 100 g of one listed generic soda type. These weights are editorial models unless explicitly labeled USDA portions. Choose one alternative for each component; do not add alternative recipes together.
For every nutrient: USDA amount per 100 g × edible grams ÷ 100, summed across ingredients. The range is the minimum and maximum across the disclosed record alternatives and weight endpoints, calculated before rounding. Calories use whole kcal; g and mg use at most one decimal, with decimal ROUND_HALF_UP and no trailing zeros.
- 0 kcalFDC 173204 × 100 g
- 0 kcalFDC 173204 × 100 g
- 2 kcalFDC 175099 × 100 g
- 2 kcalFDC 175099 × 100 g
- 1 kcalFDC 174850 × 100 g
- 1 kcalFDC 174850 × 100 g
- 0 kcalFDC 171876 × 100 g
- 0 kcalFDC 171876 × 100 g
Combined scenario ranges: protein 0–0.1 g; fat 0–0 g; carbohydrate 0–0.3 g; fiber 0–0 g; total sugars 0–0 g; sodium 4–16 mg. Nutrient minima can come from different alternatives, so the low values do not necessarily describe one meal.
Plan the portion alongside other foods
Use a matching preparation and edible weight when logging each part of a meal. These guides explain separate foods or drink choices; their portion estimates are not interchangeable.
Common questions
Soda with least calories?
This compares only four historical USDA low-calorie soda types. It cannot establish the lowest-calorie current US brand, a brand ranking or a current product formulation.
How is this estimate calculated?
Use the listed USDA records and 100 g of one listed generic soda type. Multiply each per-100-g nutrient by edible grams divided by 100, then sum components. Alternatives are separate scenarios. The range describes the disclosed scenarios, not a confidence interval or official brand nutrition.
📚 Sources and limits
USDA FoodData Central, SR Legacy: April 2018 dataset, records released April 2019. Source amounts and household portions were extracted from the locally archived USDA CSV. This is historical generic food composition, not a current branded label.
- FDC 173204: Beverages, carbonated, low calorie, other than cola or pepper, without caffeine
- FDC 175099: Beverages, carbonated, low calorie, cola or pepper-type, with aspartame, contains caffeine
- FDC 174850: Beverages, carbonated, low calorie, cola or pepper-type, with aspartame, without caffeine
- FDC 171876: Beverages, carbonated, low calorie, cola or pepper-types, with sodium saccharin, contains caffeine