1RM, pace, calorie burn, heart rate zones, VO2 max, and workout calculators.
Based on peer-reviewed medical guidelines from WHO, CDC, and AHA.
All calculations run in your browser. No data leaves your device.
Get immediate clinical interpretations and personalized insights.
Most used by healthcare professionals
25 tools available
Estimate your one-rep max for any lift using Epley, Brzycki, or Mayhew formulas.
Calculate running pace, distance, or time for any run or race.
Estimate calories burned for any activity based on weight and duration.
Find your optimal heart rate training zones based on age and resting HR.
Estimate your VO2 max from running time, distance, and weight.
Find your target heart rate range for any exercise intensity.
Calculate calories burned running based on distance, time, and weight.
Estimate calories burned walking based on distance, time, and weight.
Calculate calories burned swimming based on stroke, time, and weight.
Estimate calories burned cycling based on speed, time, and weight.
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation.
Calculate total daily energy expenditure including activity level.
Convert running pace between min/km and min/mile.
Calculate running distance from pace and time.
Calculate finish time from pace and distance.
Calculate protein, carbs, and fat grams from your calorie target.
Calculate lean body mass from weight and body fat percentage.
Calculate waist-to-height ratio and assess health risk.
Estimate body fat percentage using the U.S. Navy method.
Estimate muscle mass from body weight and body fat percentage.
Look up MET values for common physical activities.
Calculate exercise duration needed to burn a calorie target.
Convert distance to steps or steps to distance.
Calculate running cadence from steps and time.
Calculate total training volume from sets, reps, and weight.
These calculators are for educational and informational purposes only. They are not intended to replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for personalized medical guidance.
Our fitness & exercise calculators provide evidence-based tools for healthcare professionals, patients, and students. Each calculator is developed using established clinical guidelines and validated formulas from recognized medical authorities.
All formulas and clinical interpretations are based on guidelines from the World Health Organization (WHO), Centers for Disease Control (CDC), American Heart Association (AHA), and other recognized medical authorities.
