TDEE Calculator
TDEE multiplies your BMR by an activity factor based on lifestyle. This is the number of calories you need to maintain your current weight. Eat above it to gain, below it to lose. Most people overestimate their activity level — be honest when selecting.
📘 Formula & explanation
Activity multipliers derived from Harris-Benedict validation studies. Sedentary = 1.2, Light = 1.375, Moderate = 1.55, Very = 1.725, Athlete = 1.9.
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BMI Calculator
Body Mass Index — quick screening for weight relative to height.
Body Fat Percentage Calculator (US Navy)
Estimate body fat using the U.S. Navy circumference method.
Lean Body Mass Calculator
Estimate lean mass from body weight and body fat percentage.
Apply this to your training
Use the result to pick or adjust a workout plan, or browse the exercise library.