Fitness Calculators
Free fitness calculators for calories, macros, body composition, hydration, and training targets.
Plan training and nutrition with calculators for calories, macros, one-rep max, hydration, heart rate, and body composition.
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All calculators in this category
Aerobic Heart Rate Calculator
Estimate aerobic heart rate with this focused fitness calculator.
Anaerobic Heart Rate Calculator
Estimate anaerobic heart rate with this focused fitness calculator.
Athlete Macro Calculator
Estimate calories and macro targets for athlete macro.
Athlete Protein Calculator
Estimate a practical daily protein target from bodyweight.
Athlete Water Intake Calculator
Estimate daily water needs from bodyweight and activity time.
Baseball Hydration Calculator
Use this Baseball hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Baseball Protein Calculator
Use this Baseball protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Basketball Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Bench Press Max Calculator
Estimate bench press max with this focused fitness calculator.
BMI Prime Calculator
Estimate bmi prime with this focused fitness calculator.
Body Frame Size Calculator
Estimate body frame size with this focused fitness calculator.
Body Surface Area Calculator
Estimate body surface area with this focused fitness calculator.
Bodybuilding Macro Calculator
Estimate calories and macro targets for bodybuilding macro.
Bodybuilding Protein Calculator
Estimate a practical daily protein target from bodyweight.
Boxing Hydration Calculator
Use this Boxing hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Boxing Protein Calculator
Use this Boxing protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Bulking Macro Calculator
Estimate calories and macro targets for bulking macro.
Bulking Protein Calculator
Estimate a practical daily protein target from bodyweight.
Climbing Hydration Calculator
Use this Climbing hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Climbing Protein Calculator
Use this Climbing protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Contest Prep Macro Calculator
Estimate calories and macro targets for contest prep macro.
CrossFit Macro Calculator
Estimate calories and macro targets for crossfit macro.
Cutting Macro Calculator
Estimate calories and macro targets for cutting macro.
Cutting Protein Calculator
Estimate a practical daily protein target from bodyweight.
Cycling Macro Calculator
Estimate calories and macro targets for cycling macro.
Cyclist Protein Calculator
Estimate a practical daily protein target from bodyweight.
Daily Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Daily Protein Calculator
Estimate a practical daily protein target from bodyweight.
Dance Hydration Calculator
Use this Dance hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Dance Protein Calculator
Use this Dance protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Deadlift Max Calculator
Estimate deadlift max with this focused fitness calculator.
Easy Run Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Endurance Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Endurance Protein Calculator
Estimate a practical daily protein target from bodyweight.
Exercise Water Calculator
Estimate daily water needs from bodyweight and activity time.
Fat Burning Heart Rate Calculator
Estimate fat burning heart rate with this focused fitness calculator.
Fat Free Mass Calculator
Estimate fat free mass with this focused fitness calculator.
Fat Loss Macro Calculator
Estimate calories and macro targets for fat loss macro.
FFMI Calculator
Estimate ffmi with this focused fitness calculator.
Football Hydration Calculator
Use this Football hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Football Protein Calculator
Use this Football protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Frame Size Calculator
Estimate frame size with this focused fitness calculator.
Gym Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Heart Rate Zone Calculator
Estimate heart rate zone with this focused fitness calculator.
High Protein Macro Calculator
Estimate calories and macro targets for high protein macro.
Hiking Hydration Calculator
Use this Hiking hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Hiking Protein Calculator
Use this Hiking protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Hockey Macro Calculator
Estimate calories and macro targets for hockey macro.
Ideal Body Weight Calculator
Estimate ideal body weight with this focused fitness calculator.
Ideal Weight Calculator
Estimate ideal weight with this focused fitness calculator.
Interval Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Jogging Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Keto Macro Calculator
Estimate calories and macro targets for keto macro.
Lean Body Mass Calculator
Estimate lean body mass with this focused fitness calculator.
Lean Bulk Macro Calculator
Estimate calories and macro targets for lean bulk macro.
Lifter One Rep Max Calculator
Estimate one rep max with this focused fitness calculator.
Macro Calculator
Estimate calories and macro targets for macro.
Maintenance Macro Calculator
Estimate calories and macro targets for maintenance macro.
Martial Arts Hydration Calculator
Use this Martial Arts hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Martial Arts Protein Calculator
Use this Martial Arts protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Max Heart Rate Calculator
Estimate max heart rate with this focused fitness calculator.
Men Macro Calculator
Estimate calories and macro targets for men macro.
Men Protein Calculator
Estimate a practical daily protein target from bodyweight.
Mile Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
MMA Macro Calculator
Estimate calories and macro targets for mma macro.
Muscle Gain Calorie Calculator
Estimate daily calorie maintenance from age, body size, and activity level.
Muscle Gain Macro Calculator
Estimate calories and macro targets for muscle gain macro.
Muscle Gain Protein Calculator
Estimate a practical daily protein target from bodyweight.
One Rep Max Calculator
Estimate one rep max with this focused fitness calculator.
Overhead Press Max Calculator
Estimate overhead press max with this focused fitness calculator.
Pickleball Hydration Calculator
Use this Pickleball hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Pickleball Protein Calculator
Use this Pickleball protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Powerlifter Protein Calculator
Estimate a practical daily protein target from bodyweight.
Powerlifting Macro Calculator
Estimate calories and macro targets for powerlifting macro.
Protein Calculator
Estimate a practical daily protein target from bodyweight.
Protein Intake Calculator
Estimate a practical daily protein target from bodyweight.
Protein per kg Calculator
Estimate a practical daily protein target from bodyweight.
Recomposition Macro Calculator
Estimate calories and macro targets for recomposition macro.
Rep Max Calculator
Estimate rep max with this focused fitness calculator.
Resting Metabolic Rate Calculator
Estimate basal metabolic rate from age, body size, and activity level.
Rowing Hydration Calculator
Use this Rowing hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Rowing Protein Calculator
Use this Rowing protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Rugby Hydration Calculator
Use this Rugby hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Rugby Protein Calculator
Use this Rugby protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Runner Macro Calculator
Estimate calories and macro targets for runner macro.
Runner Protein Calculator
Estimate a practical daily protein target from bodyweight.
Running Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Soccer Macro Calculator
Estimate calories and macro targets for soccer macro.
Soccer Protein Calculator
Estimate a practical daily protein target from bodyweight.
Squat Max Calculator
Estimate squat max with this focused fitness calculator.
Strength Max Calculator
Estimate strength max with this focused fitness calculator.
Strength Training Protein Calculator
Estimate a practical daily protein target from bodyweight.
Summer Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Swimmer Macro Calculator
Estimate calories and macro targets for swimmer macro.
Swimmer Protein Calculator
Estimate a practical daily protein target from bodyweight.
Target Heart Rate Calculator
Estimate target heart rate with this focused fitness calculator.
Team Sport Hydration Calculator
Estimate daily water needs from bodyweight and activity time.
Tempo Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Tennis Hydration Calculator
Use this Tennis hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Tennis Protein Calculator
Use this Tennis protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Training Max Calculator
Estimate training max with this focused fitness calculator.
Training Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Triathlon Macro Calculator
Estimate calories and macro targets for triathlon macro.
Triathlon Run Pace Calculator
Estimate pace and speed from a fixed race distance and finish time.
Vegan Protein Calculator
Estimate a practical daily protein target from bodyweight.
Volleyball Hydration Calculator
Use this Volleyball hydration calculator to estimate daily water needs from bodyweight and activity time for training, matches, and recovery.
Volleyball Protein Calculator
Use this Volleyball protein calculator to estimate daily protein needs from bodyweight with a sport-specific grams-per-kilogram intake rule.
Waist to Height Ratio Calculator
Estimate waist to height ratio with this focused fitness calculator.
Water Intake For Fitness Calculator
Estimate daily water needs from bodyweight and activity time.
Weight Loss Calorie Calculator
Estimate daily calorie maintenance from age, body size, and activity level.
Weight Loss Protein Calculator
Estimate a practical daily protein target from bodyweight.
Women Macro Calculator
Estimate calories and macro targets for women macro.
Women Protein Calculator
Estimate a practical daily protein target from bodyweight.
Workout Water Intake Calculator
Estimate daily water needs from bodyweight and activity time.
Wrestling Macro Calculator
Estimate calories and macro targets for wrestling macro.
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