Health
Body Fat Calculator
Calculate your body fat percentage using US Navy method and BMI method. Free body fat calculator with comprehensive results, ideal ranges, and health recommendations.
Calorie Burned Calculator
Calculate calories burned during exercise and daily activities. Uses accurate MET values for over 40 activities including running, cycling, swimming, sports, and household tasks.
Heart Rate Tracker
Log and monitor your resting, active, and sleeping heart rate over time. View trends, charts by period, and understand your cardiovascular health with category insights.
Heart Rate Zone Calculator
Calculate your 5 personalized heart rate training zones using Max HR or Karvonen method. Free calculator for runners, cyclists, and athletes to optimize workout intensity.
Macro Calculator
Calculate daily calories and macronutrient targets for maintenance, fat loss, or muscle gain.
One Rep Max Calculator
Estimate your one rep max (1RM) using 6 proven formulas including Epley and Brzycki. Get a full training percentage table for strength programming.
Protein Intake Calculator
Calculate your daily protein needs based on body weight, activity level, age, and goal (maintain, lose, gain, endurance).
Step Goal Tracker
Track your daily steps and walking goals. Log steps, monitor streaks, view weekly charts, and see distance and calories burned. Custom step goals with local storage.