Calculators

Estimate total daily energy expenditure using the Mifflin-St Jeor equation for BMR and an activity multiplier.

Estimate your daily maintenance calories using weight, height, age, sex, and activity level based on the Mifflin-St Jeor equation multiplied by an activity factor.

Estimate your daily maintenance calories using age, sex, weight, height, and activity level based on the Mifflin-St Jeor equation with an activity multiplier.

Estimate daily calorie needs using age, sex, weight, height, and activity level based on the Mifflin-St Jeor equation and an activity multiplier.

Estimate daily calorie intake based on age, sex, weight, height, and activity level using a basal metabolic rate calculation adjusted for lifestyle.

Estimate daily calorie needs using age, sex, weight, height, and activity level. This calculator uses the Mifflin-St Jeor equation to estimate basal metabolic rate and then applies an activity multiplier to estimate total daily energy expenditure.

Calculate the percentage change in a body measurement from a starting value to a current value, with an optional target measurement to estimate progress toward your goal.

Calculate the percentage of body weight lost based on starting weight and current weight. You can also include a target weight to understand the total percentage loss needed from your starting weight to reach your goal.

Estimate calf circumference based on height, weight, age, and sex using a practical body-size formula. This calculator provides an approximate calf size in centimeters for general sizing and fitness reference.

Estimate chest circumference based on body measurements and body composition factors. Enter your ribcage circumference, shoulder width, body fat percentage, and select your sex to calculate an estimated chest size in inches.

Estimate upper arm circumference based on sex, height, weight, age, and training level. This calculator provides a practical estimate for flexed upper arm size in inches.

Estimate common body proportion ratios using height, shoulder width, waist circumference, hip circumference, and inseam length. The calculator returns a composite body proportion score based on shoulder-to-waist ratio, waist-to-hip ratio, and leg-to-height ratio.

Estimate how closely key body proportions align with the golden ratio using shoulder-to-waist, waist-to-hip, and leg-to-height relationships. The score is scaled from 0 to 100, where higher values indicate proportions closer to classic golden ratio ideals.

Calculate the shoulder-to-waist ratio using shoulder circumference and waist circumference measurements. This calculator also estimates shoulder width from circumference when needed and applies a posture adjustment factor for a more tailored comparison.

Calculate your waist-to-hip ratio (WHR) using waist and hip measurements. Choose your measurement unit and sex to support interpretation of body fat distribution and health risk screening.

Calculate your waist-to-height ratio by dividing waist circumference by height. Use the same unit system for both measurements. A lower ratio is generally associated with lower health risk.

Estimate how much body weight you need to lose to reach a target body fat percentage while preserving lean body mass.

Estimate an ideal body weight using height, gender, frame size, and formula method. This calculator applies common clinical ideal weight formulas and adjusts the result by body frame size.

Estimate your target body weight based on your current weight, current body fat percentage, desired body fat percentage, and expected lean mass change. The calculator uses lean body mass to project what you would weigh at your goal body fat level.

Estimate a target body weight based on height, sex, body frame, and desired BMI using a practical health-oriented formula.

Estimate your target body weight needed to reach a desired body fat percentage based on your current weight and current body fat. The calculation assumes lean body mass stays the same while body fat is reduced to your target level.

Estimate a realistic natural muscular bodyweight potential based on height, wrist size, ankle size, and body fat percentage using a frame-size adjusted formula.

Estimate your potential lean body mass and maximum muscular body weight based on height, wrist size, ankle size, and body fat percentage using a frame-size-adjusted formula inspired by classic natural bodybuilding models.

Estimate maximum muscular bodyweight potential at a lean condition using wrist size, ankle size, height, and sex. This calculator uses a frame-size-based model to project muscular potential at about 5% body fat for men and 12% body fat for women.

Estimate an ideal bodybuilding body weight based on height, wrist size, body fat percentage, and sex. The calculation starts with a frame-adjusted lean mass estimate from height and wrist circumference, then converts it to target body weight at the chosen body fat percentage.

Estimate ideal body weight using common clinical formulas based on height, sex, and formula method. This calculator provides an ideal weight estimate in kilograms for adults.

Estimate your daily calorie target for body recomposition by combining lean body mass, activity level, training experience, and goal aggressiveness into a practical maintenance-adjusted intake.

Estimate lean body mass using body weight and body fat percentage, with support for either kilograms or pounds.

Estimate normalized Fat-Free Mass Index (FFMI) by adjusting FFMI to a reference height of 1.80 m. Enter weight, body fat percentage, and height to calculate a standardized lean mass index.

Calculate Fat Free Mass Index (FFMI) using body weight, height, and body fat percentage. FFMI estimates lean mass relative to height and is commonly used to assess muscularity independent of body fat.