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Calculators & tools

Dial in your numbers with research-grade tools — built on the Mifflin-St Jeor equation and validated formulas, not guesswork.

Featured · BMR & TDEE

Find your calorie target

Biological sex

Age (years)

Weight (lbs)

Height (ft)

Height (in)

Activity level

YOUR BMR

1,737 kcal

Calories burned at complete rest

Maintenance (TDEE)2,693

Lose fat (−500)2,193 kcal

Lean bulk (+300)2,993 kcal

Mifflin-St Jeor estimate. General wellness info only — not medical advice.

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TDEE Calculator

Total daily energy burn

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1RM Calculator

Estimate your one-rep max

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Body Fat %

Navy method estimate

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Water Intake

Daily hydration target

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Creatine Loading

Load & maintenance dosing