Fitness Calculators
Free interactive tools to help you track your health metrics — designed with adults over 50 in mind.
Use these calculators to get personalised estimates for your fitness journey. Each tool includes age-appropriate context and guidance specific to adults over 50.
BMI Calculator
Estimate your Body Mass Index with age-specific context for over 50s.
Daily Calorie Needs
Calculate your Total Daily Energy Expenditure using the Mifflin-St Jeor equation.
Heart Rate Zones
Find your safe target heart rate zones for effective exercise using the Tanaka & Karvonen formulas.
Body Fat Percentage
Estimate body fat using the U.S. Navy circumference method — more insightful than BMI alone.
Water Intake
Determine your optimal daily water intake based on weight, activity, and climate.