About the Protein Per Meal Calculator
This protein per meal calculator takes your body weight and daily protein target and divides it evenly across the number of meals you eat. It then compares each serving with the evidence-based per-meal range of roughly 0.4 to 0.55 grams of protein per kilogram of body weight, which research on muscle protein synthesis suggests is the most useful amount to eat in one sitting.
It is aimed at lifters, athletes, older adults trying to preserve muscle, and anyone who already knows their daily protein number but wants to know how much to put on the plate at breakfast, lunch, dinner and snacks. Most people eat a small breakfast and a very large dinner; spreading protein more evenly is an easy improvement.
The calculator assumes your daily target is expressed per kilogram of total body weight. If you are carrying a lot of extra body fat, enter your goal weight instead. People with kidney disease or on a protein-restricted diet should follow their clinician’s advice.
With the default inputs, the protein per meal is 33 g. Change any value above to recalculate instantly.
How to use the protein per meal calculator
- 1Choose pounds or kilograms and enter your body weight (or goal weight).
- 2Enter your daily protein target in grams per kilogram.
- 3Enter how many meals or snacks per day will contain protein.
- 4Read the grams per meal and compare it with your 0.4–0.55 g/kg range.
- 5Adjust the number of meals until each serving lands inside the range.
Formula and method
Your daily protein is body weight in kilograms multiplied by your target in grams per kilogram (pounds are divided by 2.2046 first). That total is split evenly across the number of protein meals you eat.
The per-meal range comes from Schoenfeld and Aragon’s 2018 review in the Journal of the International Society of Sports Nutrition, which suggested about 0.4 g/kg per meal across at least four meals (reaching 1.6 g/kg/day), and up to 0.55 g/kg per meal for those aiming at 2.2 g/kg/day. The “fewest meals” output is the daily total divided by 0.55 g/kg, rounded up.
- W
- Body weight in kilograms
- T
- Daily protein target in g/kg
- M
- Number of protein meals per day
Worked examples
180 lb lifter, 1.6 g/kg, 4 meals
180 lb is 81.65 kg, so 1.6 g/kg gives 130.6 g of protein per day. Split over four meals that is about 33 g each — exactly 0.4 g/kg, the bottom of the useful per-meal range. Three meals of about 44 g would still stay under the 0.55 g/kg upper figure.
70 kg athlete eating 2.0 g/kg in 3 meals
70 × 2.0 = 140 g a day. Three meals means about 47 g each, above the 0.55 g/kg mark of 38.5 g. Spreading the same 140 g over four meals (35 g each) keeps every serving in range.
150 lb adult, 1.2 g/kg spread over 5 snacks
150 lb is 68.04 kg, so 1.2 g/kg is about 82 g per day. Over five eating occasions each one gets only about 16 g (0.24 g/kg), well short of the ~27 g that 0.4 g/kg represents, so three protein meals would serve this person better.
Frequently asked questions
How much protein should I eat per meal?+
A practical target is about 0.4 g of protein per kg of body weight per meal — roughly 25–40 g for most adults — eaten across at least four meals. Larger people and those on high-protein diets can go up to about 0.55 g/kg per meal.
Can your body only absorb 30 grams of protein at once?+
No. Your gut absorbs virtually all the protein you eat; a larger meal simply takes longer to digest. The 20–40 g figures relate to how much maximally stimulates muscle protein synthesis in one sitting, and a 2023 study found a 100 g dose produced a longer anabolic response.
Is it better to eat protein evenly through the day?+
Studies suggest an even split (for example 30 g at breakfast, lunch and dinner) stimulates muscle protein synthesis more over 24 hours than the typical pattern of a small breakfast and a large dinner, even when total daily protein is the same.
Do older adults need more protein per meal?+
Yes. Ageing muscle is less responsive to protein, so research suggests older adults need around 0.4 g/kg per meal, roughly double the amount that maximally stimulates synthesis in young men (about 0.24 g/kg).
Does a bedtime protein snack help?+
A pre-sleep serving of about 30–40 g of slowly digested protein such as casein or Greek yogurt has been shown to raise overnight muscle protein synthesis, and counts as one of your protein meals in this calculator.
This tool gives general estimates and is not medical advice. Talk to a doctor or qualified professional about your health, diet or training.