Smoothie Nutrition Calculator Formula

Understand the math behind the smoothie nutrition calculator. Each variable explained with a worked example.

Use the Smoothie Nutrition Calculator

Formulas Used

Total Calories

total_cal = fruit_cal + liquid_cal + protein_cal

Approx. Protein

approx_protein = protein_scoops * 25 + liquid_ml * 0.033 + fruit_g * 0.005

Approx. Carbs

approx_carbs = fruit_g * 0.13 + liquid_ml * 0.05

Variables

VariableDescriptionDefault
fruit_gFruit (mixed)(g)150
liquid_mlLiquid (milk/juice)(mL)250
liquid_cal_per_mlLiquid Calories0.42
protein_scoopsProtein Powder Scoops(scoops)1
fruit_calApprox fruit calories (50 kcal/100g avg)= fruit_g * 0.5calculated
liquid_calLiquid calories= liquid_ml * liquid_cal_per_mlcalculated
protein_calProtein powder calories (120/scoop)= protein_scoops * 120calculated

How It Works

How to Estimate Smoothie Nutrition

Approximate Calorie Densities

  • Mixed fruit: ~50 kcal per 100 g
  • Whole milk: ~42 kcal per 100 mL
  • Protein powder: ~120 kcal per scoop (25 g protein)

    • These are estimates. Actual values depend on specific fruits and brands used.

    Worked Example

    Make a smoothie with 150 g fruit, 250 mL whole milk, 1 scoop protein.

    fruit_g = 150liquid_ml = 250liquid_cal_per_ml = 0.42protein_scoops = 1
    1. 01Fruit calories: 150 x 0.5 = 75 kcal.
    2. 02Milk calories: 250 x 0.42 = 105 kcal.
    3. 03Protein powder: 1 x 120 = 120 kcal.
    4. 04Total: 75 + 105 + 120 = 300 kcal.

    Frequently Asked Questions

    Are smoothies healthy?

    Smoothies can be very healthy if made with whole fruits, vegetables, and a good protein source. Watch out for added sugar, fruit juice, and oversized portions that can make them calorie-dense.

    Do smoothies retain fiber?

    Yes, unlike juicing, blending retains all the fiber from fruits and vegetables. The fiber is broken down but still present.

    Can smoothies replace meals?

    A well-balanced smoothie with protein, healthy fat, and complex carbs can replace a meal. Aim for 300-500 kcal with at least 20 g protein.

    Ready to run the numbers?

    Open Smoothie Nutrition Calculator