Health and Fitness

  • Blood Alcohol Content (BAC) Calculator
    Estimate your blood alcohol content (BAC%) using the Widmark formula from drinks, body weight, gender, and time. Educational estimate — never drive after drinking.
  • Normal Heart Rate by Age Calculator
    Find the normal resting heart rate range (BPM) by age for children and adults, plus tachycardia and bradycardia thresholds. Educational guide only.
  • Corrected Sodium Calculator (Hyperglycemia)
    Calculate corrected serum sodium in hyperglycemia. Adds 1.6 (or 2.4) mEq/L per 100 mg/dL glucose above 100. For clinical education only.
  • Ounces to Grams Calculator
    Convert ounces (oz) to grams (g) instantly. Enter any weight in ounces and get the precise gram and kilogram equivalent using 1 oz = 28.3495 g.
  • Kilojoules to Calories Calculator
    Convert kilojoules (kJ) to calories (kcal) instantly. Enter an energy value and get food Calories using kcal = kJ ÷ 4.184.
  • mL to Grams Calculator
    Convert milliliters (mL) to grams (g) using density. Free volume-to-weight calculator with presets for water, milk, oil, honey, flour and more.
  • Baby Feeding Amount by Weight Calculator
    Estimate how much formula or milk to feed your baby per day and per feed based on weight, using the standard 150 mL/kg/day guideline.
  • Weeks Pregnant from Conception Date Calculator
    Find out how many weeks pregnant you are based on the conception date. Calculates gestational age in weeks and days from conception to today.
  • Baby Weight Conversion Calculator
    Convert baby weight between pounds & ounces and grams/kilograms instantly. Free two-way birth weight converter using exact conversion factors.
  • How Many Months Pregnant Am I?
    Find out how many months pregnant you are. Enter your last menstrual period (LMP) and today's date to get gestational age in months, weeks and days.
  • Weight Gain Calorie Calculator
    Calculate daily calories needed to gain weight at your target rate using TDEE plus a calorie surplus (Mifflin-St Jeor BMR). Free and easy to use.
  • Ultrasound Due Date Calculator
    Convert your ultrasound gestational age (weeks + days) into an estimated due date (EDD). Enter the scan date and GA to get your pregnancy due date instantly.
  • Basal Body Temperature (BBT) Ovulation Calculator
    Find your ovulation day and fertile window from basal body temperature. Enter your 6-day baseline and thermal shift day to detect ovulation.
  • Daily Calorie Deficit Weight Loss Calculator
    Estimate how long it takes to lose weight from a daily calorie deficit. Enter kg to lose and your daily kcal deficit to see days, weeks and weekly loss.
  • Cooper 12-Minute Run VO2 Max Calculator
    Estimate your VO2 max from the Cooper 12-minute run test. Enter distance in meters to calculate aerobic fitness instantly with the Cooper formula.
  • Katch-McArdle BMR Calculator
    Calculate your Basal Metabolic Rate with the Katch-McArdle formula using body weight and body fat percentage for a lean-mass based estimate.
  • Weekly Calorie Deficit Calculator
    Calculate your daily and weekly calorie deficit and see your estimated weekly weight loss in kg and pounds. Free, instant weight-loss pace tool.
  • BMR Calculator (Mifflin-St Jeor)
    Calculate your Basal Metabolic Rate with the Mifflin-St Jeor equation. Enter weight, height, age and gender to find daily resting calories and TDEE.
  • Macro Calculator
    Free macro calculator: convert your daily calories and macro split (%) into grams of protein, carbs, and fat per day using 4/4/9 kcal-per-gram.
  • Fractional Excretion of Sodium (FENa) Calculator
    Calculate the Fractional Excretion of Sodium (FENa%) from urine and plasma sodium and creatinine to help differentiate prerenal from intrinsic acute kidney injury.
  • Ovulation Date Calculator
    Estimate your ovulation day and fertile window from the first day of your last period and your average cycle length. Free, fast, and easy to use.
  • Macronutrient Split Calculator
    Convert your daily calories and macro percentages into grams of protein, carbs, and fat per day. Free macronutrient split calculator.
  • Running Calories Burned Calculator
    Estimate calories burned while running using the MET formula. Enter your weight, pace and duration to get kcal burned and calories per minute.
  • Katch-McArdle BMR Calculator
    Estimate your basal metabolic rate with the Katch-McArdle formula based on lean body mass. Enter weight and body fat % to get daily resting calories.

Categories