How much protein per pound of bodyweight should men 25-40 eat?

0.8 to 1.0 grams per pound of bodyweight per day for resistance trainees. The International Society of Sports Nutrition Position Stand (Jäger et al., 2017) supports 1.4-2.0 g/kg (roughly 0.6-0.9 g/lb) for general resistance training, with the upper end (around 1.0 g/lb) appropriate during a fat-loss phase to preserve muscle.

Should I eat more protein on a cut?

Yes. During a calorie deficit, higher protein helps preserve lean muscle and increases satiety. This macro calculator uses 1.0 g/lb on a cut, 0.9 g/lb on recomp, and 0.8 g/lb on a bulk. The protein floor goes up as calories go down.

Why do my calories not equal protein plus carbs plus fat?

Protein and carbs are 4 kcal/g, fat is 9 kcal/g. The math is: (protein g × 4) + (carb g × 4) + (fat g × 9) = total kcal. Rounding to whole grams may show a 5-15 kcal difference; that is normal and not a problem in practice.

Do I need to hit my macros exactly every day?

No. Target the weekly average. If protein is 30 g low one day and 30 g high the next, the week averages out. Day-to-day variation is expected. The point is the weekly trend, not perfection on any single day.

How should I split protein across the day?

Split into 3-5 meals of roughly equal protein. For a 200 g daily target, that's 40 g across 5 meals or 50 g across 4 meals. Evenly distributed protein maximizes muscle protein synthesis stimulation throughout the day per leucine-threshold research.

Free tool

Macro calculator for men 25-40

Sets protein per ISSN guidance (Jäger et al., 2017), fat at 25-30% of calories depending on goal, carbs fill the rest. Free, no signup, no email gate.

How the math works

Protein is set first based on bodyweight and goal: 1.0 g/lb on a cut, 0.9 g/lb on recomp, 0.8 g/lb on a bulk. Fat is set as a percentage of total calories: 25% on a cut, 27% on recomp, 30% on a bulk. Carbs fill the remaining calories.

Why protein goes up during a cut: lower calories means more relative emphasis on preserving muscle. Why fat percentage shifts: hormone production and satiety both benefit from adequate fat at different calorie levels. Carbs are flexible because performance tolerance varies — some clients do well on lower carbs, others need more for training intensity.

The calculator is a starting point

Macros are the easy part. The hard part is reading your week — sleep, training quality, weight trend, hunger, stress — and knowing when to shift protein up, fat down, or carbs around training. That is what 1:1 coaching with Kris adds. The calculator gets you 80%; coaching gets you the last 20%, which is where most people stall.

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