Health & Fitness Calculators
Track your health metrics with clinically validated calculators for BMI, BMR, TDEE, body fat, heart rate zones, and more.
Track your body metrics with clinically validated calculators: BMI, BMR, TDEE, body fat percentage, heart rate zones, ideal weight, and calorie burn. Each calculator uses published clinical formulas and runs entirely in your browser — your health data never leaves your device.
These tools provide estimates based on population averages. They're useful for tracking trends and setting goals, but they're not medical diagnoses. Always consult a healthcare professional for medical advice.
Tools in Health & Fitness
6 tools in this collection.
Health Metrics Studio
Calculate BMI, BMR, TDEE, daily calories, macros, healthy weight, protein, water intake and more with ForgePlug's free global Health Metrics Studio.
Nutrition Studio
Generate personalized diet plans, weekly meal planners, grocery lists, macro targets and smart food substitutions with ForgePlug's free Nutrition Studio.
Body Fat Calculator
Estimate body fat percentage using the US Navy Method or the Jackson-Pollock skinfold method, compare with a BMI estimate, and calculate lean body mass and fat mass — free, private, and browser-only.
Calorie Burn Calculator
Estimate calories burned during 25+ activities — running, cycling, swimming, HIIT, yoga and more. MET-based, browser-only, free.
Heart Rate Zone Calculator
Calculate your 5 training heart rate zones (Z1–Z5) using the 220-age or Tanaka formula, plus Karvonen heart-rate-reserve method.
Ideal Weight Calculator
Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas plus the WHO healthy weight range for your height.