Fitness Calculators
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BMI Calculator
Body Mass Index
BMR Calculator
Basal Metabolic Rate
TDEE Calculator
Total Daily Energy Expenditure
Calorie Calculator
Daily calorie needs
Carbohydrate Calculator
Daily carbohydrate intake
Fat Intake Calculator
Daily dietary fat needs
Macro Calculator
Protein, carbs, fat
Body Fat Calculator
Navy method estimate
Army Body Fat Calculator
One-site tape method (2023)
Air Force PT Calculator
2026 standards: 2-mile run, WHtR, push-ups, sit-ups
Body Surface Area
BSA: Du Bois, Mosteller, Haycock
Waist to Hip Ratio
WHR calculator, WHO thresholds
Lean Body Mass
Boer & James formulas, muscle vs. fat
Heart Rate Zones
Training zones
1RM Calculator
One-rep max
Protein Intake
Daily protein needs
Water Intake
Daily hydration
Calories Burned
Activity calories
Power-to-Weight
W/kg, hp/lb ratio
Calorie Deficit
Time to reach target weight
Healthy Weight
Ideal body weight formulas
Ideal Body Weight
IBW, Robinson, Miller, Devine, Hamwi
Running Pace
5K, 10K, marathon finish time
VO2 Max
Aerobic capacity estimate
Fitness Age
How young does your body perform?
Protein in Food
Estimate protein in common foods
McDonald’s Nutrition
2026 meal builder: calories, macros & sodium
Chipotle Nutrition
Calories, protein & macros for bowls, burritos & salads
Sleep Cycle Calculator
Ideal bedtime & wake time, 90-min cycles
BAC Calculator
Blood Alcohol Concentration estimate
Pregnancy Weight Gain
IOM guidelines, healthy gain range