TOOLFree health & fitness calculators
This collection brings together the numbers that guide training and nutrition — how many calories you burn, how to split them, where your body mass sits, and the heart rate zones to train in. Each tool runs entirely in your browser, so the personal details you enter never leave your device.
Start with the TDEE calculator to find your maintenance calories, split them into grams with the macro calculator, check your BMI and body fat percentage, find a healthy target with the ideal weight calculator, stay hydrated with the water intake calculator, and train smarter with the one rep max calculator, running pace calculator and target heart rate calculator.
These tools provide general estimates for educational purposes only and are not medical advice. Individual needs vary — consult a qualified healthcare professional before making significant changes to diet or exercise.