What is the Daily Protein Goal Calculator?
This calculator estimates how many grams of protein you should aim to eat each day based on your body weight and how active you are. Protein needs are commonly expressed as grams per kilogram of body weight (g/kg). The standard minimum for healthy sedentary adults is around 0.8 g/kg, while people who train, build muscle, or compete athletically benefit from substantially more — typically 1.2 to 2.0 g/kg.
How to use it
Enter your body weight in kilograms, then choose the activity level that best matches your routine. The calculator multiplies your weight by the matching factor and shows your daily protein target, the calories that protein supplies, and a rough per-meal split across three meals.
The formula explained
The core equation is $$\text{Protein (g)} = \text{Weight (kg)} \times \text{Factor}$$ The factor reflects your goal: 0.8 for sedentary maintenance, 1.2–1.4 for general activity, 1.6–1.8 for strength training and muscle building, and up to 2.0 for athletes or those in a calorie deficit who want to preserve lean mass. Because protein contains about 4 kcal per gram, multiplying grams by 4 gives the calories contributed.
Worked example
A 70 kg person doing regular strength training picks the 1.6 g/kg factor: $$70 \times 1.6 = 112 \text{ g of protein per day}$$ That equals \(112 \times 4 = 448\) kcal from protein, or roughly 37 g spread across each of three daily meals.
FAQ
Should I use bodyweight or lean mass? For most people, total body weight works well. Very overweight individuals may get a closer estimate using lean body mass or goal weight.
Can I eat too much protein? Healthy people generally tolerate higher protein intakes, but exceeding ~2 g/kg rarely adds benefit. Those with kidney conditions should consult a doctor.
Does timing matter? Total daily intake matters most, but spreading protein evenly across meals helps with muscle protein synthesis.
