Free tools
Free, no-signup calculators to help you understand your body and train smarter.
Calculate your total daily energy expenditure using the Mifflin-St Jeor formula. Adjust for your activity level and goal.
fitness_centerEstimate your one rep max from lifted weight and reps. Epley, Brzycki, and Lombardi formulas.
self_improvementCalculate your recovery score from your sleep, HRV, resting heart rate, and soreness.
exerciseCreate your personalized strength training program in 30 seconds. Choose your level, goal, and equipment.