Health and Fitness

  • Pre-Pregnancy BMI & Weight Gain Calculator
    Calculate your pre-pregnancy BMI and see the recommended total weight gain range for a healthy single pregnancy based on IOM guidelines.
  • Body Surface Area Calculator
    Calculate body surface area (BSA) in m² using the Mosteller and DuBois & DuBois formulas. Enter height in cm and weight in kg.
  • Non-HDL Cholesterol Calculator
    Calculate your non-HDL cholesterol by subtracting HDL from total cholesterol. Enter mg/dL values to see your non-HDL level and risk category.
  • Triglyceride to HDL Ratio Calculator
    Calculate your triglyceride to HDL (TG/HDL) ratio from a lipid panel. Enter triglycerides and HDL in mg/dL to assess cardiometabolic risk.
  • MAP from Blood Pressure Calculator (DBP + ⅓ Pulse Pressure)
    Calculate Mean Arterial Pressure (MAP) from systolic and diastolic blood pressure using MAP = DBP + (SBP − DBP)/3. Fast, free estimate.
  • Systemic Vascular Resistance Calculator
    Calculate systemic vascular resistance (SVR) from MAP, CVP and cardiac output. Get results in dynes·s·cm⁻⁵ and Wood units instantly.
  • Weight Gain Calorie Calculator
    Find how many calories per day you need to gain weight. Calculates your TDEE plus a bulking surplus from your target weekly weight gain.
  • Blood Alcohol Content (BAC) Calculator
    Estimate your blood alcohol content (BAC) with the Widmark formula from drinks, body weight, gender and time. Educational estimate only — never use to decide to drive.
  • Ejection Fraction Calculator (LVEF)
    Calculate left ventricular ejection fraction (LVEF) from end-diastolic and end-systolic volumes. EF% = ((EDV − ESV) / EDV) × 100, with classification.
  • Calories to Kilojoules Calculator
    Convert calories (kcal) to kilojoules (kJ) instantly. Enter food energy in kilocalories and get the kJ value using kJ = kcal × 4.184.
  • Carbohydrate Intake Calculator
    Calculate your daily carbohydrate intake in grams from your total daily calories (TDEE) and target carb percentage. Free, fast carb macro calculator.
  • Calories Burned Cycling Calculator
    Estimate calories burned cycling from your weight, ride duration and speed using MET values. Free, instant, science-based cycling calorie calculator.
  • Calorie Surplus Calculator
    Calculate your daily calorie target for muscle gain. Add your surplus to TDEE and estimate weekly weight gain in kg and lb.
  • Calories Burned Running Calculator
    Estimate the calories you burn running based on your body weight and distance covered. Free, instant running calorie calculator using kg and km.
  • Weight Loss Timeline Calculator
    Estimate how many days, weeks and months it takes to reach your goal weight from your current weight and daily calorie deficit using the 7700 kcal/kg rule.
  • Goal Body Fat Weight Calculator
    Find your goal weight at a target body fat percentage. Enter current weight and body fat % to see goal weight, fat to lose, and lean mass.
  • RFM (Relative Fat Mass) Calculator
    Estimate your body fat percentage with the RFM (Relative Fat Mass) calculator using only height and waist circumference. Free, fast, and accurate.
  • Body Surface Area (Mosteller) Calculator
    Calculate Body Surface Area (BSA) using the Mosteller formula from height (cm) and weight (kg). Fast, accurate result in square meters (m²).
  • Intermittent Fasting Window Calculator
    Plan your intermittent fasting schedule. Enter your protocol (16:8, 18:6, 20:4, OMAD) and eating start time to get exact eating and fasting windows.
  • Steps to Distance Calculator
    Convert your daily steps into distance in kilometers and miles using your height and gender to estimate stride length. Free and accurate.
  • Barbell Plate Loading Calculator
    Figure out exactly which weight plates to load on each side of your barbell to hit a target weight. Supports pounds and kilograms.
  • VO2 Max Calculator — Cooper 12-Minute Run Test
    Estimate your VO2 max from the Cooper 12-minute run test. Enter the distance you ran in meters to get aerobic fitness in mL/kg/min.
  • BMI Calculator (Body Mass Index)
    Free BMI calculator. Enter your weight in kg and height in cm to find your Body Mass Index and weight category instantly using the standard WHO formula.
  • Daily Calorie Intake by Goal Calculator
    Calculate your daily calorie intake for cutting, maintaining, or bulking based on BMR, TDEE, and activity level using the Mifflin-St Jeor equation.

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