Fitness Calculator

  • ACFT 2-Mile Run Score Calculator
    Estimate your US Army ACFT 2-mile run score (0-100) from your finish time, age, and sex. Linear interpolation against the FY23+ scoring scale.
  • USMC PFT Calculator
    Calculate your US Marine Corps PFT score from pull-ups/push-ups, plank, and 3-mile run by age and sex. See your total and class (1st-3rd).
  • How Long to Walk Off Calories Calculator
    Find out how many minutes of walking it takes to burn off the calories in a food, based on your weight and walking pace using MET values.
  • Jump Rope Calories Burned Calculator
    Estimate calories burned jumping rope from your body weight, workout duration and skipping intensity using the MET formula. Free and instant.
  • Yoga Calories Burned Calculator
    Estimate calories burned during yoga using the MET formula. Choose your style, enter weight and duration to get kcal burned for Hatha, Vinyasa, Hot yoga and more.
  • Postpartum Weight Loss Calculator
    Estimate how many weeks to reach your goal weight after birth using safe loss rates (~0.5 kg/week if breastfeeding). General guidance only.
  • METs to Calories Burned Calculator
    Convert METs to calories burned. Enter activity intensity (METs), body weight, and duration to estimate the energy you expend during exercise.
  • Calories Burned Walking Calculator
    Estimate calories burned walking from your weight, walking speed and duration. Get kcal, distance and approximate step count using MET values.
  • 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.
  • 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.
  • 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.
  • VO2 Max Calculator from Run Time
    Estimate your VO2 max from a 12-minute Cooper run distance or from your max/resting heart rate ratio. Free aerobic fitness calculator.
  • Target Heart Rate Zone Calculator (Karvonen)
    Calculate your target heart rate training zone using the Karvonen formula based on age, resting heart rate, and exercise intensity percentage.
  • 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.
  • 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.
  • 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.
  • Pace to Speed Converter
    Convert running pace (min/mile) to speed (mph) and back instantly. Also shows km/h and min/km equivalents for easy treadmill and race planning.
  • One-Rep Max (1RM) Calculator
    Estimate your one-rep max (1RM) for deadlift, squat, or bench from reps and weight using the Epley and Brzycki formulas. Free, fast, and accurate.
  • Cooper 12-Minute Run Test Calculator
    Estimate your VO2 max from the Cooper 12-minute run test. Enter the distance covered in meters to get your aerobic fitness score instantly.
  • VO2 Max Estimate Calculator (Cooper Test)
    Estimate your VO2 max from the Cooper 12-minute run test. Enter meters covered in 12 minutes to get your aerobic fitness score in mL/kg/min.
  • 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.
  • 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.
  • 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.

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