Most sodas contain little to no protein — a standard 12 oz cola has 0 g. But when you're tracking macros precisely or comparing a protein-fortified beverage against a regular soda, knowing the protein content per 100 g (or 100 ml) is essential. This calculator converts the protein value on any nutrition label into a standard per-100g figure, so you can compare beverages fairly.
Simply enter the protein per serving and the serving size (in ml or fl oz), or pick a common soda preset. The tool accounts for the fact that soda is nearly water, so 1 ml equals about 1 g. You'll also see the protein in a typical 12 oz can and how many cans you'd need to reach your daily protein target — often an impossible number, which underlines just how protein-poor most sodas are.
Use it for diet planning, macro tracking, or simply to settle the question of whether your favorite fizzy drink contributes any meaningful protein.
🥤 Soda Protein Per 100g
Convert any soda label to a standard per-100g protein value.
Why Compare Protein per 100g?
Nutrition labels typically list protein per serving, but serving sizes vary wildly between brands and container sizes. Standardizing to 100 g (or 100 ml) lets you compare colas, ginger ale, root beer, sparkling water, and even protein-fortified sodas on a level playing field. Because soda is almost entirely water, 100 ml weighs almost exactly 100 g, so the two reference values are interchangeable for this category.
Step-by-Step Guide
- Select a beverage preset or leave it on 'Custom values'.
- Enter the protein amount listed on the label, in grams.
- Enter the serving size and choose ml or fl oz.
- Click 'Calculate Protein'.
- Read the per-100g value, per-can value, and daily value contribution.
The Math Behind the Calculation
If the serving size is in fluid ounces, convert to millilitres first:
ml = fl oz × 29.5735
Then treat the mass of one millilitre as 1 gram (carbonated soft drinks have a density very close to water). Finally:
Protein per 100 g = (Protein per serving (g) ÷ serving mass (g)) × 100
For a standard 12 oz can (355 ml), multiply by 355 instead of 100: Protein per can = (Protein per serving ÷ serving mass) × 355.
The daily value (DV) for protein is based on a reference intake of 50 g per day for a 2,000-calorie diet. The calculator shows the percentage of that target supplied by one serving. FDA's Daily Value page explains the official basis.
Reference Data: Protein in Popular Sodas
| Beverage | Serving | Protein/serving | Protein/100g |
|---|---|---|---|
| Regular cola | 355 ml | 0 g | 0 g |
| Diet cola | 355 ml | 0 g | 0 g |
| Ginger ale | 355 ml | 0 g | 0 g |
| Root beer | 355 ml | 0 g | 0 g |
| Sparkling water | 355 ml | 0 g | 0 g |
| Protein-fortified soda (example) | 355 ml | 10 g | 2.82 g |
Values are typical; always check the nutrition panel because brands and formulations differ. For sugar or sodium tracking, see the Soda Sugar Calculator and Soda Sodium Calculator.
Common Mistakes to Avoid
- Using 100 ml and 100 g interchangeably without thinking. For soda it’s fine because density is ~1 g/ml, but for thicker syrups or creamy drinks you should weigh them.
- Forgetting to convert fl oz to ml. 12 fluid ounces is 355 ml, not 355 “units” if you enter fluid ounces.
- Ignoring “per serving.” Label values refer to the serving size printed on the bottle, which may be smaller or larger than a typical can.
- Assuming diet soda has protein. Diet vs. regular changes sugar and calories, not protein; both are essentially protein-free.
Frequently Asked Questions
Q: Why do most sodas have 0 g protein?
Soft drinks are made from carbonated water, sweeteners, acids, flavors, and preservatives — none of which supply meaningful amino acids. Protein is almost entirely absent unless deliberately added.
Q: Is protein per 100g the same as per 100ml?
Yes, for practical purposes. Carbonated beverages have a density close to 1.0 g/ml, so 100 ml weighs about 100 g. Use the 100 g value if you weigh your portion, and 100 ml if you measure by volume.
Q: Can protein soda replace a post-workout shake?
It can contribute protein, but check the amount per can. A 2.82 g per 100g drink provides only about 10 g per can, while most protein shakes provide 20–30 g per serving. It also often contains added sugar and acid, so read the label.
Q: How does this fit into macro counting?
If you’re tracking protein, sodas won’t help you meet your target — they’re pure “empty” fluid. Pair this tool with the protein-per-100g calculator to see how dense foods like chicken, Greek yogurt, or tofu compare.
Official Nutrition References
The U.S. FDA’s Nutrition Facts label rules define the protein Daily Value and how it should be declared on beverages. The USDA FoodData Central database provides brand-level nutrient values for thousands of beverages. Both are excellent ways to verify label data.