Fitness & Health Calculators

Choose whether to calculate from a known due date or your last menstrual period, adjust the cycle length and luteal phase, and the calculator instantly…

Enter the first day of your last menstrual period, your average cycle length, and your luteal phase to instantly see your estimated ovulation day, fertile…

Enter your pre‑pregnancy weight and height to calculate your BMI, then select whether you’re carrying one baby or twins. The calculator instantly shows your recommended…

Enter your age to instantly estimate your maximum heart rate and see five training zones (Warm‑up, Fat Burn, Aerobic, Anaerobic, and VO₂ Max) with target…

Enter the weight you lifted and how many reps you performed to instantly estimate your one‑rep max using four proven formulas (Epley, Brzycki, Lombardi, and…

Select an activity from the list (each with a MET value), enter your weight and duration in minutes or hours, and the calculator instantly shows…

Enter your height in centimeters or inches, and the calculator instantly determines your healthy weight range based on the standard BMI range of 18.5 to…

Select your gender, enter your weight and height in metric or imperial units, and optionally add your age. The calculator instantly estimates your lean body…

Select your gender, enter your age, weight, height, waist (abdomen), neck, and hip measurements (for females). The calculator instantly computes your body fat percentage using…

Choose whether to calculate from your last menstrual period, due date, or a known conception date, then optionally adjust your cycle length and luteal phase.…