Health & Fitness Calculators
Adult body measurements and clearly explained energy estimates. Choose a tool below for instant results, formulas, and examples.
Army Waist-to-Height Ratio CalculatorCalculate Army WHtR under the 2026 standard. Use recorded averages or three waist readings, check the 0.550 boundary, and find the half-inch waist limit.Air Force Waist-to-Height Ratio CalculatorCalculate Air Force WHtR points with the 2026 chart. Apply tape-measure rounding and ratio truncation, or find a recorded waist for your target score.Waist-to-Height Ratio CalculatorCalculate waist-to-height ratio in inches or centimeters. Get measurement guidance, the inverse height-to-waist ratio and optional adult reference bands.Body Fat CalculatorEstimate adult body fat from height and body circumferences using legacy circumference equations. Show estimated fat and fat-free mass with metric or imperial inputs.Protein CalculatorConvert an adult protein reference range or custom grams-per-kilogram factors into daily and per-meal grams using metric or imperial body weight.Calorie Deficit CalculatorCalculate daily and weekly calorie gaps from maintenance energy and a chosen reduction or intake. Compare selected deficit days with maintenance days.BMI CalculatorCalculate adult BMI with metric or imperial measurements, see the CDC category, and understand the height-based reference weight interval.BMR CalculatorEstimate adult resting calorie needs with the Mifflin–St Jeor equation. Use pounds/inches or kilograms/centimeters and inspect the calculation.TDEE CalculatorEstimate total daily energy expenditure using resting calorie needs and an explicit activity multiplier. Compare activity scenarios in kcal and kJ.