BMI Calculator
Calculate your body mass index using height and weight, with BMI category interpretation.
Calculate ->30 free calculators
Health and lifestyle calculators based on science
BMI, calories, macros, pregnancy, and more — accurate formulas, plain English results.
BMR Calculator
Calculate your basal metabolic rate using age, sex, height, and weight.
Calculate ->TDEE Calculator
Estimate your total daily energy expenditure from BMR and activity level
Calculate ->Calorie Calculator
Estimate daily calorie needs for maintenance, weight loss, and weight gain using BMR and activity level.
Calculate ->Calorie Needs Calculator
Calculate daily calorie targets for weight loss, maintenance, or weight gain.
Calculate ->Body Surface Area Calculator
Calculate body surface area from height and weight using common BSA formulas.
Calculate ->BAC Calculator
Estimate blood alcohol concentration from drinks, body weight, sex, and time elapsed.
Calculate ->Body Type Calculator
Estimate body type from simple body measurements and explain common somatotype categories.
Calculate ->Pregnancy Calculator
Estimate due date, gestational age, trimester, conception date, and days remaining in pregnancy.
Calculate ->Due Date Calculator
Estimate pregnancy due date from last period, conception date, IVF date, or ultrasound date.
Calculate ->Pregnancy Conception Calculator
Estimate possible conception date from due date, last period, or ultrasound dating.
Calculate ->Conception Calculator
Estimate fertile window and possible conception dates from last period, cycle length, or due date.
Calculate ->Ovulation Calculator
Estimate ovulation date and fertile window from last period date and cycle length.
Calculate ->Period Calculator
Estimate next period date, cycle dates, ovulation date, and fertile window.
Calculate ->Pregnancy Weight Gain Calculator
Estimate recommended pregnancy weight gain range based on pre-pregnancy BMI and pregnancy type.
Calculate ->GFR Calculator
Estimate glomerular filtration rate using serum creatinine, age, and sex with the CKD-EPI 2021 equation.
Calculate ->Fat Intake Calculator
Calculate daily fat intake in grams based on calories and dietary fat percentage.
Calculate ->Protein Calculator
Calculate daily protein intake based on body weight, activity level, and fitness goal.
Calculate ->Carbohydrate Calculator
Calculate daily carbohydrate targets based on calories, protein, fat, and fitness goal.
Calculate ->Army Body Fat Calculator
Estimate body fat percentage using the U.S. Army body fat method based on circumference measurements.
Calculate ->Body Fat Percentage Calculator
Estimate body fat percentage using the US Navy body fat formula.
Calculate ->Healthy Weight Calculator
Calculate a healthy weight range for your height using the standard healthy BMI range.
Calculate ->Ideal Weight Calculator
Estimate ideal body weight using height and sex with the Devine formula.
Calculate ->Lean Body Mass Calculator
Calculate lean body mass from body weight and body fat percentage.
Calculate ->Macro Calculator
Calculate daily protein, carbohydrate, and fat targets based on calories, body weight, and goal.
Calculate ->Water Intake Calculator
Estimate daily water intake based on body weight and activity level.
Calculate ->One Rep Max Calculator
Estimate your one rep max using weight lifted and reps performed.
Calculate ->Calories Burned Calculator
Estimate calories burned during exercise using activity type, body weight, and duration.
Calculate ->Pace Calculator
Calculate running, walking, or cycling pace from distance and time.
Calculate ->Target Heart Rate Calculator
Calculate target heart rate zones for exercise using age and resting heart rate.
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