Free Serving Size Calculator
Calculate calories and macronutrients for a specific serving size based on nutrition label information.
g
g
kcal
g
Your Calories
257 kcal
Your Protein5.5 g
Serving Ratio1.83
Your Calories vs Label Serving Size
How to Calculate Nutrients for Any Serving Size
Divide your actual serving by the label serving to get a ratio, then multiply each nutrient by that ratio.
Formula
Ratio = Your Serving / Label Serving
Your Nutrient = Label Nutrient x Ratio
Example Calculation
Cereal label says 30g serving has 140 calories and 3g protein. You eat 55g.
- 01Ratio = 55 / 30 = 1.83
- 02Your calories = 140 x 1.83 = 257 kcal
- 03Your protein = 3 x 1.83 = 5.5 g
Frequently Asked Questions
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