❤️ Health calculators

BMI, calories, body fat, pregnancy and fitness. 20 calculators.

• Alcohol Units CalculatorCalculate UK alcohol units and US standard drinks in any drink from its volume and ABV.
• BMI CalculatorCalculate Body Mass Index from weight and height in kg, lb, cm or inches — or find the weight for a target BMI.
• BMR & Daily Calorie CalculatorEstimate your Basal Metabolic Rate (BMR) and daily calorie needs (TDEE) with the Mifflin–St Jeor equation.
• Body Fat Calculator (US Navy Method)Estimate your body fat percentage from waist, neck, hip and height measurements using the US Navy formula.
• Body Surface Area Calculator (BSA)Calculate body surface area (BSA) from height and weight using the Mosteller formula.
• Calorie Deficit & Weight Loss Time CalculatorEstimate how long it takes to lose weight at a given daily calorie deficit — based on about 7,700 kcal per kg of body fat.
• Calories Burned Calculator (MET)Estimate calories burned during walking, running, cycling, swimming and other activities from body weight and duration.
• Creatinine Clearance Calculator (Cockcroft–Gault)Estimate creatinine clearance (kidney function) from age, weight, sex and serum creatinine with the Cockcroft–Gault equation.
• Heart Rate Zone CalculatorFind your maximum heart rate and target heart rate for any training intensity using the Karvonen method.
• Ideal Weight CalculatorEstimate ideal body weight from height using the Devine formula, plus the healthy BMI weight range for your height.
• Lean Body Mass CalculatorEstimate lean body mass (everything except fat) from height, weight and sex using the Boer formula.
• Macro Calculator (Protein, Carbs, Fat)Split your daily calories into grams of protein, carbohydrate and fat using your chosen macro percentages.
• Mean Arterial Pressure (MAP) CalculatorCalculate mean arterial pressure from systolic and diastolic blood pressure readings.
• Pack-Year Calculator (Smoking History)Calculate smoking pack-years from cigarettes per day and years smoked — used to assess lung cancer screening eligibility.
• Protein Intake CalculatorWork out how many grams of protein you need per day based on body weight and activity or goal.
• Steps to Distance CalculatorConvert steps to kilometres or miles using your height — plus an estimate of calories burned walking.
• VO₂ Max Calculator (Cooper Test)Estimate your VO₂ max from the distance you can run in 12 minutes using the Cooper test.
• Waist-to-Height Ratio CalculatorCalculate your waist-to-height ratio (WHtR), a simple measure of central body fat and health risk.
• Waist-to-Hip Ratio CalculatorCalculate your waist-to-hip ratio (WHR) and compare it with WHO risk thresholds for men and women.
• Water Intake CalculatorEstimate how much water to drink per day based on your body weight and exercise time.