Health & Fitness Calculators
Track your wellness journey with calculators for BMI, calories, macros, and fitness goals. Science-backed formulas for better health decisions.
All Health & Fitness Calculators
Showing 24 of 45 calculators
Pregnancy Calculator
Calculate your pregnancy due date, find out how many weeks pregnant you are, track your pregnancy...
Protein Calculator
Calculate your optimal daily protein intake based on body weight, activity level, and fitness goa...
TDEE Macros Cutting Calculator
Calculate TDEE, calorie deficit or surplus, and macro targets (protein/carbs/fat) for cutting, le...
BMI Calculator
Calculate your Body Mass Index (BMI), check where you fall on the BMI chart, find your ideal weig...
BMR Calculator - Basal Metabolic Rate & Daily Calorie Needs
Calculate your Basal Metabolic Rate (BMR) - the number of calories your body burns at rest. Use m...
TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) to know exactly how many calories you burn e...
VO2 Max Calculator
Use our free VO2 max calculator to estimate your maximum oxygen uptake using 4 validated test met...
Sleep Calculator
Calculate the best times to sleep and wake up based on 90-minute sleep cycles. Find your optimal ...
Calorie Calculator
Calculate how many calories you should eat per day for weight loss, muscle gain, or maintenance. ...
Calories Burned Calculator
Use our free calories burned calculator to estimate calories burned during 25+ exercises and acti...
Running Pace Calculator
Calculate your running pace, finish time, or distance instantly. Enter any two values to find the...
Intermittent Fasting Calculator
Calculate your intermittent fasting schedule for 16:8, 18:6, 20:4, or OMAD protocols. Enter your ...
Ovulation Calculator
Calculate your ovulation date, predict your fertile window, and find the best days to conceive ba...
Cat Age Calculator
Convert your cat's age into human years using the AAHA (American Animal Hospital Association) sta...
Heart Rate Calculator
Free heart rate calculator using the Karvonen formula. Calculate your max heart rate (MHR), heart...
Dog Age Calculator
Convert your dog's age to human-equivalent years using the 2019 Cell Systems (Wang et al.) epigen...
One Rep Max Calculator
Estimate your one rep max (1RM) from any submaximal lift using the Epley, Brzycki, or Lombardi fo...
Menstrual Cycle Calculator
Predict your next period, track your menstrual cycle, and identify your fertile window. Enter you...
Blood Pressure Calculator
Use our free blood pressure calculator to interpret your BP reading. Get the AHA 2017 category (N...
Heart Rate Zone Calculator
Use our free heart rate zone calculator with the Karvonen formula to compute 5 training zones (Re...
Max Heart Rate Calculator
Use our free max heart rate calculator with 4 proven formulas (Tanaka, Fox, Gulati for women, Nes...
Macro Calculator
Calculate your daily macronutrient needs (protein, carbs, fat) based on your TDEE, body compositi...
Carbohydrate Calculator
Use our free carbohydrate calculator to determine your optimal daily carb intake based on body we...
Lean Body Mass Calculator
Use our free lean body mass (LBM) calculator with three formulas — Boer, James, and Hume — pl...