Calculate BMI body mass index, daily energy expenditure (TDEE), macronutrient splits, body fat, and developmental health metrics.
Calculate Body Mass Index (BMI) and health category according to WHO standards.
Calculate maintenance calories, BMR, and daily calorie targets for weight loss or muscle gain.
Calculate daily grams of protein, carbohydrates, and healthy fats based on your fitness goals.
Calculate estimated delivery date (EDD), gestational age, and key baby milestones.
Estimate body fat percentage, lean body mass, and fat mass using circumference measurements.
Calculate calories burned at complete rest using Mifflin-St Jeor and Harris-Benedict formulas.
Estimate probable conception dates, ovulation window, and implantation timeline from due date or LMP.
Predict adult target height for boys and girls using the pediatric Tanner mid-parental method.
Calculate estimated Glomerular Filtration Rate (eGFR) using the race-free 2021 CKD-EPI equation and KDIGO staging.
Estimate your cardiovascular heart age and 10-year heart attack risk based on the Framingham model.
Calculate sleep apnea severity (Normal, Mild, Moderate, Severe) from sleep study event counts.
Estimate 10-year and 30-year risk of ASCVD and Heart Failure using the American Heart Association PREVENT equations.
Estimate breast implant volume in cubic centimeters (cc) to reach desired bra cup size.
Estimate 10-year heart attack & stroke risk and heart age under UK NICE NG238 clinical guidelines.
Evaluate NICE threshold guidelines (≥10% 10-yr risk), benefits, side effects, and NNT for statin therapy.
Find your accurate bra band and cup size with UK, US, EU, FR, and AU conversions and sister sizing.
Estimate post-augmentation bra cup size, volume in cc, profile projection, and base diameter for silicone and saline implants.
BMI is calculated as weight in kilograms divided by height in meters squared (kg/m²), or in imperial units as [weight (lbs) / height (in)²] × 703.
TDEE is the total calories your body burns in 24 hours, combining your Basal Metabolic Rate (BMR), Non-Exercise Activity Thermogenesis (NEAT), exercise expenditure, and the Thermic Effect of Food (TEF).
For weight loss, a balanced macronutrient split typically prioritizes higher protein (1.6 - 2.2g per kg body weight) to preserve lean muscle while maintaining a moderate calorie deficit of 300-500 calories.
The US Navy circumference method is accurate to within 3-4% of DEXA scans when measurements of the neck, waist, and hips are taken consistently in the morning.