Health and Fitness

  • Intermittent Fasting Time Calculator
    Calculate when your fast ends and your eating window opens and closes based on your last meal and chosen fasting schedule like 16:8 or 18:6.
  • SOFA Score Calculator
    Calculate the SOFA (Sequential Organ Failure Assessment) score from 6 organ subscores to gauge organ dysfunction and estimate ICU mortality risk.
  • Daily Protein Intake by Body Weight Calculator
    Calculate your daily protein needs in grams based on body weight and goal (0.8–2.2 g/kg). Includes per-meal split and protein calories.
  • Steps to Distance Calculator
    Convert your step count into distance in miles or kilometers. Estimates stride length from your height and gender for an accurate walking distance.
  • Weekly Weight Loss Calculator
    Find the daily calorie deficit needed to lose a set number of pounds per week. Uses the 3,500 calories per pound rule for fast, simple planning.
  • Weeks Pregnant Calculator
    Find out how many weeks pregnant you are today. Calculate gestational age in weeks and days from your last menstrual period (LMP) date.
  • Dog Treat Calorie Limit Calculator
    Find how many treat calories your dog can have per day using the vet 10% rule. Enter weight and activity to get a safe daily treat calorie limit.
  • VO2 Max Calculator (Cooper 12-Minute Run Test)
    Estimate your VO2 max from the Cooper 12-minute run test. Enter the distance you covered in meters to get your aerobic fitness score instantly.
  • Bulking Calorie & Macro Calculator
    Calculate your daily bulking calories and macros (protein, carbs, fat) for muscle gain using your TDEE plus a 250–500 kcal surplus.
  • Marathon Pace Calculator
    Convert your marathon goal finish time into the exact pace per km or mile you need to run. Free pace chart calculator with average speed.
  • Time to Reach Goal Weight Calculator
    Estimate how many weeks it will take to reach your goal weight based on your daily calorie deficit. Uses the 3,500 calories per pound rule.
  • Cups to Grams Calculator
    Convert cups to grams for any ingredient using density. Pick flour, sugar, butter, water and more, or enter a custom g/mL value. Free and instant.
  • METs to VO2 Conversion Calculator
    Convert METs to VO2 oxygen consumption instantly. Enter activity intensity in METs to get VO2 in mL/kg/min, plus optional absolute VO2 in L/min.
  • Pregnancy Trimester End Dates Calculator
    Calculate the start and end dates of each pregnancy trimester and your estimated due date from your last menstrual period (LMP) and cycle length.
  • Fetal Movement Kick Count Calculator
    Time how long it takes to feel 10 fetal movements. Calculates elapsed minutes, pace per kick, and flags if it exceeds the 2-hour guideline.
  • Calories Burned Swimming Calculator
    Estimate calories burned swimming by stroke, body weight and duration using the standard MET formula. Free, instant, and works for any swimmer.
  • Calories from Carbs, Protein & Fat Calculator
    Calculate total calories from grams of carbohydrates, protein, fat and alcohol using the 4-4-9-7 kcal-per-gram Atwater factors, with a macro breakdown.
  • Macros to Calories Calculator
    Convert grams of protein, carbs, fat and alcohol into calories (kcal) instantly. Uses 4/4/9/7 kcal per gram with a full macro breakdown.
  • 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.

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