Health Calc is a collection of free, browser-based health and fitness calculators covering weight, energy, body composition, fitness training, sleep, and cycle tracking.
Every calculator on this site runs entirely in your browser. Nothing you type into a calculator is stored, transmitted, or saved anywhere — we don't collect your height, weight, age, or any other figure you enter. The results exist only on your screen, for you.
Each calculator is built on a standard, published formula — the same equations used across clinical, fitness, and academic references (Mifflin-St Jeor for BMR, the U.S. Navy circumference method for body fat, the Devine formula for ideal weight, and so on). We link to how each one is calculated directly on its page.
Health Calc is not run by doctors, dietitians, or licensed health professionals, and nothing on this site is medical advice. It's a set of quick reference tools meant to give you a reasonable estimate — for anything that affects a real decision about your health, please talk to a qualified professional.
If you have feedback, spot an error in a formula, or want to suggest a calculator we don't have yet, we'd like to hear about it. You can reach us at wavewellnessclub@gmail.com.
Health Calc