Free Fitness & Health Tools

Science-backed calculators and tools to help you understand your body and reach your fitness goals.

Convert between steps, distance, time, and calories burned. Get personalized walking metrics based on your characteristics.

Calculate your Total Daily Energy Expenditure to understand how many calories you burn each day.

Calculate your Body Mass Index and learn about its limitations and better alternatives for measuring health.

Track your fitness journey with adaptive AI goals, social challenges, and your own digital pet. Free for iOS and Android.