Health and Fitness

  • Running Calories Burned Calculator
    Estimate net calories burned running from your body weight and distance. Free running calorie calculator using the simple 1.036 × kg × km formula.
  • Cholesterol Unit Converter (mg/dL ↔ mmol/L)
    Convert cholesterol and triglyceride values between mg/dL and mmol/L instantly. Uses 38.67 for cholesterol and 88.57 for triglycerides.
  • Gestational Age from LMP Calculator
    Calculate gestational age in weeks and days from the last menstrual period (LMP). Enter the LMP date and today's date to get exact pregnancy weeks.
  • Blood Glucose Unit Converter
    Convert blood glucose between mg/dL and mmol/L instantly. Enter a value and unit to switch between US and international glucose measurement units.
  • Heart Rate as Percent of Max Calculator
    Calculate your current heart rate as a percentage of your estimated maximum heart rate (220 − age). Find your training intensity zone instantly.
  • Body Fat % to Lean & Fat Mass Calculator
    Convert your body fat percentage and weight into fat mass and lean body mass instantly. Works with kg or lb — simple, accurate, and free.
  • Waist Circumference Risk Calculator
    Check your abdominal-obesity health risk from waist circumference. Men >102cm/40in and women >88cm/35in flag high risk. Free, instant, cm or inches.
  • Katch-McArdle BMR Calculator
    Calculate your Basal Metabolic Rate with the Katch-McArdle formula using lean body mass and body fat percentage. Free, accurate BMR estimate.
  • Mosteller Body Surface Area (BSA) Calculator
    Calculate body surface area (BSA) in m² using the Mosteller formula from weight (kg) and height (cm). Fast, accurate, and clinically common.
  • Weight Loss Percentage Calculator
    Calculate your weight loss percentage from starting and current weight. Find what percent of your body weight you've lost in any unit (lb or kg).
  • Percentage of 1RM Calculator
    Calculate your training weight as a percentage of your one-rep max (1RM). Enter your 1RM and target percentage to get the load to lift.
  • How Many Weeks Pregnant Am I?
    Find out how many weeks and days pregnant you are from your last menstrual period (LMP). Enter your LMP and an as-of date to get gestational age instantly.
  • Time to Metabolize Alcohol Calculator
    Estimate how many hours it takes to metabolize alcohol from your current BAC, using the average elimination rate of 0.015% per hour.
  • PHQ-9 Depression Score Calculator
    Calculate your PHQ-9 depression screening score (0–27) from the 9 standard items and see the matching severity band, from minimal to severe.
  • Gleason Score & Grade Group Calculator
    Calculate the prostate cancer Gleason score from primary and secondary patterns and convert it to the ISUP/WHO Grade Group (1–5).
  • Daily Water Intake by Body Weight Calculator
    Calculate how much water you should drink daily based on your body weight in pounds or kilograms, plus your activity level. Get ounces, ml, liters and cups.
  • Pregnancy Caffeine Limit Calculator
    Add up coffee, tea, soda, energy drinks and chocolate to see how much caffeine you've had and how much is left under the 200 mg/day pregnancy limit.
  • Baby Weight-for-Age Percentile Calculator
    Find your baby's weight-for-age percentile (0–24 months) using WHO growth standards. Enter sex, age, and weight to get z-score and percentile.
  • Daily Protein Goal by Activity Calculator
    Calculate your daily protein goal in grams based on body weight and activity level, from sedentary (0.8 g/kg) to athlete (2.0 g/kg).
  • Infant Length/Height-for-Age Percentile Calculator
    Estimate your baby's length or height-for-age percentile (0-24 months) using WHO growth standards, a z-score and the normal distribution.
  • Calories Burned by Steps Calculator
    Estimate calories burned from your step count, body weight and height. Free calculator using stride length and distance to give kcal burned walking.
  • Fat Mass to Lose for Goal Body Fat % Calculator
    Find how many kg of fat you need to lose to hit a target body fat percentage, assuming lean mass stays constant. Free, instant results.
  • Steps to Calories Calculator
    Convert daily steps into calories burned. Enter steps, body weight and stride length to estimate kcal and distance walked instantly.
  • Target Weight for BMI Calculator
    Find the body weight needed to reach a target BMI. Enter your height, current weight and goal BMI to see your target weight and how much to lose or gain.

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