Vital Stats
Calculators
Measure BMI, body fat, calories, macros, 1RM, heart rate zones, and more.
BMI Calculator
Body Mass Index
Enter weight & height
Body Fat % Calculator
U.S. Navy method
Fill all measurements
Calorie Needs (BMR / TDEE)
Mifflin-St Jeor equation
Enter age, weight & height
Ideal Body Weight
Devine, Robinson, Hamwi & Miller
Enter height
Macronutrient Split
Daily macros from calorie target
Enter a calorie target
Water Intake
Daily hydration target
Enter your weight
One-Rep Max (1RM)
Epley formula + training percentages
Enter weight & reps (1–20)
Heart Rate Zones
Max HR & training zones
Enter your age
Lean Body Mass
Muscle & fat mass breakdown
Enter weight & body fat %
Calories Burned
Activity-based estimate (METs)
Enter weight & duration
Waist-to-Height Ratio
Cardiometabolic risk indicator
Enter waist & height
These calculators provide general estimates for informational purposes only and are not medical advice. Body fat uses the U.S. Navy circumference method. Consult a healthcare professional for personalized guidance.
