Health and Fitness

  • PERC Rule Calculator
    PERC Rule Calculator checks all 8 criteria (age, heart rate, SpO2, hemoptysis, estrogen, VTE, surgery, leg swelling) to rule out pulmonary embolism.
  • Wells Score for Pulmonary Embolism Calculator
    Calculate the Wells Score for pulmonary embolism (PE). Add weighted clinical criteria to estimate PE probability with three-tier and two-tier risk.
  • Wells Score for DVT Calculator
    Calculate the Wells Score for deep vein thrombosis (DVT) by summing 10 weighted clinical criteria to stratify low, moderate, or high pretest probability.
  • TIMI Risk Score for UA/NSTEMI Calculator
    Calculate the TIMI Risk Score for unstable angina and NSTEMI by summing 7 clinical risk factors to estimate 14-day adverse event risk.
  • Pregnancy Weight Gain Tracker vs. Recommended
    Compare your actual pregnancy weight gain to IOM-recommended targets by week and pre-pregnancy BMI. See if you are on track, above, or below.
  • Creatinine Clearance (IBW) Calculator
    Estimate creatinine clearance (CrCl) with the Cockcroft-Gault equation using age, weight, sex, and serum creatinine. Result in mL/min for renal dosing.
  • Daily Protein Requirement Calculator
    Calculate your daily protein needs in grams from body weight and activity level, from the 0.8 g/kg RDA up to 2.2 g/kg for athletes.
  • Sodium to Salt Calculator
    Convert sodium (mg) to salt (grams) instantly. Multiply sodium by 2.5 to find equivalent table salt (NaCl) for nutrition labels and diet tracking.
  • Calorie Macro Split Calculator
    Convert your daily calorie target and macro percentages into grams of protein, carbs and fat. Free macro split calculator with instant results.
  • Devine Ideal Body Weight Calculator
    Calculate ideal body weight with the Devine formula. Enter gender and height in feet/inches to get IBW in kilograms and pounds instantly.
  • Pregnancy Weeks to Months Calculator
    Convert weeks pregnant to months instantly. Enter your gestational age in weeks to see how many months pregnant you are, using 4.34524 weeks per month.
  • BMI Calculator
    Free BMI calculator: enter weight in kg and height in cm to instantly find your Body Mass Index and weight category (underweight, normal, overweight, obese).
  • Creatine Dosage Calculator
    Calculate your daily creatine monohydrate dose by body weight: loading phase (0.3 g/kg split in 4) and maintenance (0.03 g/kg, ~3-5 g/day).
  • Calories from Fat, Protein & Carbs Calculator
    Calculate total calories from fat, protein, carbs and alcohol grams using the 9/4/4/7 kcal-per-gram Atwater factors, plus each macro's % of energy.
  • Life Expectancy Calculator
    Estimate your life expectancy from age, gender, and lifestyle factors like smoking, exercise, diet, and alcohol. Free, instant, educational estimate.
  • 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.
  • Running Calories Calculator (Distance & Weight)
    Estimate calories burned running from your body weight and distance. Uses the simple 0.75 × lb × miles (or 1.036 × kg × km) rule for any pace.
  • Brzycki 1RM Calculator
    Estimate your one-rep max (1RM) with the Brzycki formula. Enter the weight lifted and reps performed to get your maximum strength estimate instantly.
  • 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).
  • 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.
  • 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.
  • 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.
  • 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.

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