Fitness & Workout Calculators
Six focused tools to estimate calories burned, running energy, steps-to-calories conversion, heart rate training zones, VO2 max fitness level, and athlete calorie needs.
Calories Burned Calculator
Estimate calories burned across common activities using your body weight, duration, and intensity level.
Open calculator →Running Calorie Calculator
Calculate the calories you burn on runs of any distance and pace, with practical per-mile and per-km estimates.
Open calculator →Steps to Calories Calculator
Convert your daily step count into an estimated calorie burn based on your weight and walking intensity.
Open calculator →Heart Rate Zone Calculator
Find your five heart rate training zones for fat burn, endurance, and performance using your age and resting heart rate.
Open calculator →VO2 Max Calculator
Estimate your VO2 max aerobic fitness level and see how it compares to typical values for your age and sex.
Open calculator →Athlete Calorie Calculator
Estimate daily calorie needs for training athletes, factoring in sport intensity, training volume, and body composition goals.
Open calculator →