Calculators
Enter your details once — every calculator shares them, in your browser only. Start with TDEE, then macros, then the meal planner.
Energy
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TDEE & Calorie Calculator
Daily calorie needs from 4 published BMR equations, activity level and goal.
→Macro Calculator
Protein, carbs and fat in grams — evidence-based or by diet style, per meal.
→Carb Cycling Calculator
High, medium and low carb days built around your training week.
→Meal Planner
Auto-generate a full day of meals that hits your macros, with swaps and a shopping list.
Nutrients
Goals
Body
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Body Fat Calculator
U.S. Navy tape method, skinfolds, RFM and BMI-based estimates side by side.
→FFMI Calculator
Fat-free mass index and lean mass — how muscular you are for your height.
→BMI Calculator
Body mass index, the new BMI, healthy-weight range — and why lifters should read it with care.
→Ideal Weight Calculator
Devine, Robinson, Miller, Hamwi and BMI-range estimates compared.