What this calculator measures
Protein is the most important macronutrient for anyone training — it repairs muscle damage, supports growth, and helps maintain lean mass during a calorie deficit. A sufficient daily protein target is the single most evidence-supported nutritional variable for body composition outcomes.
How this calculator works
Targets use goal-specific multipliers between 1.4 g/kg (general health) and 2.4 g/kg (aggressive cut) derived from ISSN and ACSM meta-analyses on protein intake, muscle protein synthesis, and nitrogen balance. The exact multiplier scales with training intensity, energy deficit depth, and the need for muscle retention versus growth.
How to use your result
Spread your target across 3–4 meals to optimize muscle protein synthesis across the day. Total daily intake matters far more than precise timing or meal composition. If you struggle to hit your target through food alone, a high-quality protein supplement can bridge the gap without replacing whole foods.
Important limitation
Calculator results are estimates. Pregnancy, eating disorders, medical conditions, injuries, or concerning symptoms require qualified professional guidance.