Fitness Calculator

  • Percentage of 1RM Calculator
    Calculate your working weight as a percentage of your one-rep max (1RM). Enter your 1RM and target percent to get the exact training load plus a full % table.
  • 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.
  • BMR Calculator (Mifflin-St Jeor)
    Calculate your Basal Metabolic Rate with the Mifflin-St Jeor equation. Enter weight, height, age and gender to get daily resting calories plus TDEE estimates.
  • 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.
  • 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.
  • 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.
  • 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.
  • Steps to Distance & Calories Calculator
    Convert your daily steps into distance (km & miles) and estimate calories burned, based on your height, weight and walking pace.
  • 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).
  • Cardio Calorie Burn Calculator
    Estimate calories burned during cardio from your heart rate, weight, age, and duration using the Keytel heart-rate equations for men and women.
  • Goal Weight Date Calculator
    Estimate how many weeks and the target date to reach your goal weight from a daily calorie deficit, using the 7,700 kcal-per-kg rule.
  • Body Surface Area Calculator
    Calculate Body Surface Area (BSA) in m² using the Mosteller and Du Bois formulas from your height (cm) and weight (kg). Fast, accurate, free.
  • Weight Gain Calorie Calculator
    Find how many calories per day you need to gain weight. Calculates your TDEE plus a bulking surplus from your target weekly weight gain.
  • Calories Burned Cycling Calculator
    Estimate calories burned cycling from your weight, ride duration and speed using MET values. Free, instant, science-based cycling calorie calculator.
  • Calorie Surplus Calculator
    Calculate your daily calorie target for muscle gain. Add your surplus to TDEE and estimate weekly weight gain in kg and lb.
  • Calories Burned Running Calculator
    Estimate the calories you burn running based on your body weight and distance covered. Free, instant running calorie calculator using kg and km.
  • Weight Loss Timeline Calculator
    Estimate how many days, weeks and months it takes to reach your goal weight from your current weight and daily calorie deficit using the 7700 kcal/kg rule.
  • Steps to Distance Calculator
    Convert your daily steps into distance in kilometers and miles using your height and gender to estimate stride length. Free and accurate.
  • Barbell Plate Loading Calculator
    Figure out exactly which weight plates to load on each side of your barbell to hit a target weight. Supports pounds and kilograms.
  • VO2 Max Calculator — Cooper 12-Minute Run Test
    Estimate your VO2 max from the Cooper 12-minute run test. Enter the distance you ran in meters to get aerobic fitness in mL/kg/min.
  • Mindful Walking Step Goal Calculator
    Track your daily step goal progress. Enter steps taken and your goal to see your completion percentage and steps remaining instantly.

Categories