Fitness Calculator

  • Backpack Weight Calculator
    Calculate your backpack weight as a percentage of body weight and see your recommended maximum pack load for safe, comfortable hiking.
  • Calories Burned Hiking Calculator
    Estimate calories burned hiking using the MET formula. Enter your weight, duration, and terrain to see total kcal burned, per minute and per hour.
  • Calories Burned Dancing Calculator
    Estimate calories burned dancing by style, body weight and duration using MET values. Free calculator for Zumba, salsa, ballroom and more.
  • Calories Burned Rowing Machine Calculator
    Estimate calories burned on a rowing machine from your weight, duration and intensity using the MET formula. Free, instant rowing calorie calculator.
  • Basketball Calories Burned Calculator
    Estimate how many calories you burn playing basketball based on your weight, duration, and intensity using the standard MET formula.
  • Calories Burned on Elliptical Calculator
    Estimate calories burned on an elliptical machine from your weight, workout duration, and intensity (MET) using the standard MET energy-expenditure formula.
  • Calories Burned Climbing Stairs Calculator
    Estimate calories burned climbing stairs from your weight, time, and intensity using the MET formula. Free, instant stair-climbing calorie calculator.
  • Running VO2 Max Calculator
    Estimate your VO2 max from a race result using the Daniels & Gilbert VDOT formula. Enter distance and finish time to get oxygen uptake in mL/kg/min.
  • Calories Burned Doing Yoga Calculator
    Estimate how many calories you burn doing yoga using the MET formula. Enter your weight, session length and yoga style for an instant kcal estimate.
  • Calories Burned Jumping Rope Calculator
    Estimate how many calories you burn jumping rope by body weight, duration and intensity using MET values. Free, instant calorie calculator.
  • Calories Burned Walking Calculator
    Estimate calories burned walking with this MET-based calculator. Enter your weight, walking time, and pace to get kcal burned, per minute and per hour.
  • One Rep Max Calculator
    Estimate your one rep max (1RM) from weight lifted and reps using the Epley and Brzycki formulas. Free, instant, and works in kg or lb.
  • Running Pace & Race Time Predictor
    Predict your race finish time and pace for any distance using Riegel's formula from a known result. Free running pace and time predictor calculator.
  • Treadmill Calories Burned Calculator
    Estimate calories burned on a treadmill from your weight, speed, incline and duration using the ACSM VO2 walking/running equation.
  • FFMI Calculator
    Calculate your Fat-Free Mass Index (FFMI) and height-adjusted FFMI from weight, height, and body fat percentage to gauge muscle mass.
  • Swim Pace Calculator (Per 100m)
    Calculate your swimming pace per 100m from any distance and time. Get your per-50m split and average speed in km/h instantly.
  • Epley 1RM Calculator
    Estimate your one-rep max (1RM) for bench press or any lift using the Epley and Brzycki formulas. Enter weight and reps to get instant results.
  • Target Heart Rate Zone Calculator
    Find your maximum heart rate and 5 exercise target heart rate zones in bpm using the Basic (%MHR) or Karvonen heart rate reserve method.
  • Miles to Steps Calculator
    Convert miles to steps instantly. Enter distance and your stride length to estimate how many steps you walked or need to walk.
  • Wilks Calculator
    Calculate your Wilks score from bodyweight and total lifted (kg). Uses the original Wilks coefficient formula for fair powerlifting comparison.
  • Bench Press Pyramid Calculator
    Calculate your bench press pyramid set weights from your 1RM. Get 50/60/70/80/90/100% loads rounded to the plates you have.
  • 5/3/1 Training Max Calculator
    Calculate your 5/3/1 Training Max (90% of 1RM) and all weekly working-set weights (65/75/85%, 70/80/90%, 75/85/95%) instantly.
  • Scuba Weight Calculator
    Estimate how much weight you need for scuba diving based on body weight, water type (salt/fresh), and your exposure suit. Quick starting-point guide.
  • Triathlon Heart Rate Training Zones Calculator
    Calculate sport-specific run and bike heart rate training zones for triathlon from your lactate threshold heart rate (LTHR) using the Joe Friel method.

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