Health and Fitness

  • Calories per Pound of Bodyweight Calculator
    Estimate daily maintenance calories using the calories-per-pound rule. Pick cut (×12), maintain (×15), or bulk (×18) to find your target intake fast.
  • Insulin Dose Calculator
    Estimate a mealtime insulin bolus from carbs, your insulin-to-carb ratio, current and target blood glucose, and correction factor. Educational use only.
  • Pregnancy Calorie Needs Calculator
    Estimate daily calorie needs during pregnancy. Adds the recommended extra kcal per trimester (0/+340/+450) to your maintenance TDEE.
  • Insulin Sensitivity Factor Calculator
    Estimate your insulin sensitivity factor (correction factor) using the 1800, 1700 or 1500 rule from your total daily insulin dose, in mg/dL or mmol/L.
  • Pediatric GFR Calculator
    Estimate glomerular filtration rate in children using the bedside Schwartz equation from height and serum creatinine. Free pediatric eGFR tool.
  • Miles Per Hour Pace Calculator
    Free pace calculator: enter distance and time to get your pace per mile and per kilometer plus speed in mph and km/h. Works for running, walking, cycling.
  • Running Calories by Distance Calculator
    Estimate the calories you burn running based on your body weight and the distance you cover. Quick, distance-based running energy expenditure calculator.
  • Weight for Height Percentile Calculator (Adult)
    Find the healthy weight range for your height using the BMI 18.5–25 standard. Enter height in cm or inches to see your ideal weight in kilograms.
  • Resting Heart Rate Fitness Calculator
    Find your fitness level from your resting heart rate. Compares your RHR against standard age and sex norms to rate it Athlete to Poor.
  • Sober Up Time Calculator
    Estimate how many hours until your blood alcohol concentration (BAC) returns to zero, based on the average metabolism rate of 0.015% per hour.
  • Gestational Age from Ultrasound Calculator
    Calculate estimated due date (EDD) and current gestational age from an ultrasound scan date and the gestational age measured at that scan.
  • Alcohol By Volume (ABV) Calculator
    Calculate the alcohol by volume (ABV%) of beer, wine, or mead from original and final gravity readings using the standard ABV = (OG − FG) × 131.25 formula.
  • Drug Dosage Calculator
    Calculate weight-based drug dosage in mg per dose, daily dose, and liquid volume (mL) from patient weight, dose per kg, frequency and concentration.
  • Army BMI Calculator (AR 600-9)
    Calculate your Body Mass Index using the US Army AR 600-9 method. Enter weight in pounds and height in inches for an instant BMI and category.
  • Calories Burned Running Calculator
    Estimate calories burned running by distance and body weight. Free running calorie calculator using kcal = 0.75 × kg × km (≈ 0.53 × lb × miles).
  • Calorie Surplus Calculator for Weight Gain
    Calculate the daily calorie surplus and target intake needed to gain weight by a target date. Free weight-gain calorie calculator with worked example.
  • Bench Press / Lift Percentage Calculator
    Calculate your working weight for bench press, squat or any lift as a percentage of your one-rep max (1RM). Fast % of 1RM training weight tool.
  • cm to Feet & Inches Calculator
    Convert height in centimeters to feet and inches instantly. Enter cm and get exact feet, remaining inches, and total inches.
  • Pulse Pressure Calculator
    Calculate pulse pressure from your blood pressure: Pulse Pressure = Systolic − Diastolic. See if your value is low, normal, or high, plus estimated MAP.
  • Weight Converter (kg ↔ lb ↔ stone)
    Convert weight between kilograms, pounds and stone instantly. Enter a value and unit to get accurate kg, lb and stone equivalents.
  • HbA1c to Average Glucose Calculator
    Convert HbA1c (%) to estimated average glucose (eAG) in mg/dL and mmol/L using the ADAG formula. Fast, free diabetes conversion tool.
  • Non-HDL Cholesterol Calculator
    Calculate your non-HDL cholesterol by subtracting HDL from total cholesterol (mg/dL). Includes risk category interpretation. Educational use only.
  • Max Heart Rate Calculator (Tanaka Formula)
    Estimate your maximum heart rate from age using the Tanaka formula (208 − 0.7 × age). Get bpm plus moderate and vigorous training heart-rate zones.
  • VO2 Max from Resting Heart Rate Calculator
    Estimate your VO2 max from resting heart rate and age using the Uth-Sørensen formula. Free, instant cardiovascular fitness calculator.

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