Fitness Calculators
15 free calculators
BMI Calculator
Calculate your Body Mass Index and see if you're in a healthy weight range for your height.
TDEE Calculator
Calculate your Total Daily Energy Expenditure - the calories you burn each day based on your activity level.
Calorie Deficit Calculator
Find your daily calorie target to reach your goal weight in a set timeframe. Safe, science-backed calorie planning.
Body Fat Calculator
Estimate your body fat percentage using the US Navy circumference method. Get fat mass, lean mass, and fitness category.
Ideal Weight Calculator
Find your ideal body weight based on height and gender using 4 medical formulas - Hamwi, Devine, Robinson, and Miller.
Water Intake Calculator
Find out how much water you should drink daily based on your weight, exercise, and climate.
Macro Calculator
Calculate your daily protein, carbs, and fat targets based on your goal - cut, maintain, or bulk.
Protein Calculator
Find your daily protein intake target based on body weight and fitness goal - sedentary to athlete.
Running Pace Calculator
Calculate your running pace per km and per mile, speed, and projected finish times for common race distances.
Sleep Calculator
Find the best times to wake up or go to sleep based on 90-minute sleep cycles. Wake up refreshed, not groggy.
One Rep Max Calculator
Estimate your one rep max (1RM) for any lift using weight and reps. Based on Epley, Brzycki, and other formulas.
Heart Rate Zones Calculator
Calculate your 5 heart rate training zones based on age and resting heart rate for optimal cardio training.
Calories Burned Calculator
Estimate calories burned for 20+ activities based on your weight and duration using MET values.
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure for weight management.
Pregnancy Due Date Calculator
Calculate your estimated due date (EDD) from LMP, conception date, or IVF transfer date. Track milestones and trimesters.