Fitness Calculator

  • Steps to Km Calculator
    Convert steps to kilometers instantly. Enter your step count and height to estimate distance walked in km, meters, and miles using stride length.
  • Race Time Improvement Calculator
    Calculate how much faster your new race time is versus your old time. See the percent improvement and seconds saved instantly.
  • Race Time Predictor Calculator
    Predict your race finish time at any distance using Riegel's formula. Enter a known time and distance to forecast 5K, 10K, half & full marathon times.
  • Magic Mile Calculator
    Use Jeff Galloway's Magic Mile time trial to predict your 5K, 10K, half marathon and marathon race pace and finish times.
  • Marathon Pace Calculator
    Calculate your required marathon pace per mile and per kilometer from your goal finish time. Free, fast marathon pace calculator for runners.
  • Max Heart Rate Calculator
    Estimate your maximum heart rate (HRmax) from age using the Fox (220 − age) or Tanaka (208 − 0.7 × age) formula, plus training heart-rate zones.
  • MET Minutes Calculator
    Calculate MET-minutes from any activity's MET value and duration. Find per-session and weekly physical activity totals to track exercise intensity.
  • Heart Rate Zone Calculator
    Calculate your 5 heart rate training zones from age or HRmax. Find target bpm ranges for fat burn, endurance, and peak performance.
  • Heart Rate Recovery Calculator
    Calculate your heart rate recovery (HRR) — the bpm drop one minute after peak exercise. Enter peak and recovery heart rate to gauge fitness.
  • Music Activity Calorie Burn Calculator
    Estimate calories burned playing an instrument, marching band, singing or conducting using the METs formula: METs x kg x hours x 1.05. Free and instant.
  • Half Marathon Pace Calculator
    Calculate your half marathon pace per km and per mile from your finish time. Get average pace, speed in km/h and mph for the 21.0975 km distance.
  • Calories Burned Weight Lifting Calculator
    Estimate calories burned weight lifting using the MET formula. Enter your body weight, workout duration, and intensity to get instant kcal results.
  • Horseback Riding Calorie Burn Calculator
    Estimate calories burned horseback riding by gait (walk, trot, canter, jump), duration and body weight using the MET-based energy formula.
  • Weight Loss Calculator
    Estimate how fast you'll lose weight from your daily calorie deficit. Enter your TDEE and intake to get kg and lb lost per week and month.
  • Walking Calorie Calculator
    Estimate calories burned walking from your weight, speed and time. Uses MET values to give kcal burned, calories per minute and distance covered.
  • Swimming Calorie Calculator
    Estimate calories burned swimming by stroke, body weight and duration. Uses MET values for freestyle, backstroke, breaststroke and butterfly.
  • Sauna Calories Burned Calculator
    Estimate how many calories you burn in the sauna based on your body weight, session length and intensity (MET) using the standard MET formula.
  • Steps to Calories Calculator
    Convert your step count into calories burned. Enter steps and body weight to estimate the energy you spent walking, adjusted for your weight.
  • Stairs Calorie Calculator
    Calculate how many calories you burn climbing stairs based on your weight, duration and intensity (MET) using the standard MET formula.
  • Running Calorie Calculator
    Calculate calories burned running based on your weight, speed and duration using MET values. Free, fast and accurate running calorie estimator.
  • Firefighter Calorie Burn Calculator
    Estimate calories burned during firefighting activities using the MET formula. Choose an activity, enter time and body weight to get kcal instantly.
  • Fat Burning Zone Calculator
    Find your fat burning heart rate zone (60-70% of max HR) by age. Calculate target bpm for low-intensity, fat-burning cardio workouts.
  • Elliptical Calorie Calculator
    Estimate calories burned on an elliptical trainer from your weight, workout duration and intensity (MET) using the standard MET energy formula.
  • Police Officer Calorie Burn Calculator
    Estimate calories a police officer burns during patrol, traffic duty or arrests using MET values, body weight and time. Free MET-based kcal calculator.

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