Health & Fitness Calculators
Free online health & fitness calculators and tools. Pick one to get started.
BMI CalculatorCalculate your body mass index and see your healthy weight range.BMR CalculatorFind how many calories your body burns at rest each day.Calorie CalculatorEstimate your daily calories to maintain, lose or gain weight.Ideal Weight CalculatorCompare ideal body weight from four well known formulas.Body Fat CalculatorEstimate your body fat percentage with the US Navy method.Water Intake CalculatorEstimate how much water you should drink every day.Pregnancy Due Date CalculatorEstimate your due date from the first day of your last period.Calories Burned CalculatorEstimate the calories you burn during exercise.Body Surface Area CalculatorFind your body surface area (BSA) with two common formulas.Waist-to-Hip Ratio CalculatorFind your waist-to-hip ratio, a simple health marker.Waist-to-Height Ratio CalculatorFind your waist-to-height ratio. Keeping it under 0.5 is a common health goal.Lean Body Mass CalculatorEstimate your lean body mass and fat mass with the Boer formula.Macro CalculatorTurn your daily calories into grams of protein, carbs and fat.Protein Intake CalculatorEstimate how much protein you need each day.Target Heart Rate CalculatorFind your heart rate zones for exercise with the Karvonen method.Ovulation CalculatorEstimate your ovulation day and fertile window.Running Pace CalculatorFind your running pace and speed from distance and time.Sleep CalculatorFind the best bedtime for the time you need to wake up.One Rep Max CalculatorEstimate the most weight you can lift for one repetition.Weight Loss CalculatorFind the daily calorie deficit you need to reach a goal weight.