439 calculators for body measurements, BMI, diet, sleep, cardiovascular health, and more
Calculate your Body Mass Index (BMI) and see which category you fall into.
Calculate your daily calorie needs using the Mifflin-St Jeor equation. Estimate Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE).
Estimate your body fat percentage using the Deurenberg formula based on BMI, age, and gender.
Estimate your blood alcohol concentration using the Widmark formula. Accounts for number of drinks, body weight, gender, and time elapsed.
Calculate Mean Arterial Pressure (MAP) and pulse pressure from your systolic and diastolic blood pressure readings.
Find the normal respiratory rate range for different age groups and check whether a measured breathing rate is within the healthy range.
Calculate your daily carbohydrate needs based on Total Daily Energy Expenditure (TDEE) and your chosen carbohydrate percentage of total calories.
Estimate creatinine clearance (CrCl) and glomerular filtration rate (eGFR) using the Cockcroft-Gault formula. Accounts for age, weight, gender, and serum creatinine.
Calculate how much water you should drink daily based on your weight and exercise minutes. Stay hydrated with personalized recommendations.
Estimate your risk of developing type 2 diabetes within the next 10 years using the validated FINDRISC questionnaire from the Finnish Diabetes Association.
Calculate your estimated due date using Naegele's rule based on the first day of your last menstrual period (LMP) or conception date. Also shows key pregnancy milestones.
Calculate your maximum heart rate (220 - age) and target heart rate zones for different exercise intensities. Based on the standard age-predicted formula.
Calculate your ideal body weight using the Devine formula. Get weight ranges for males and females based on height, with adjustment frames.
Calculate your lean body mass (LBM) using the Boer formula. LBM is your total body weight minus body fat. Useful for body composition tracking and medical dosing.
Calculate daily macronutrient targets for protein, carbs, and fat based on your calorie goal and preferred diet ratio.
Calculate recommended pregnancy weight gain ranges based on IOM (Institute of Medicine) guidelines. Uses your pre-pregnancy BMI to determine healthy gain ranges by trimester.
Calculate your daily protein needs based on your body weight, activity level, and fitness goals. Ranges from 0.8 g/kg for sedentary to 2.0+ g/kg for athletes.
Calculate the best bedtime or wake time based on 90-minute sleep cycles. Wake up between cycles to feel more refreshed. Supports wake-at and go-to-bed modes.
Calculate calories burned based on step count, pace, and body weight. Converts your daily steps into estimated energy expenditure.
Calculate your Basal Metabolic Rate (BMR) adjusted for thyroid function. Accounts for hypo- and hyperthyroid states using a correction factor applied to the Mifflin-St Jeor equation.
Calculate your waist-to-hip ratio and assess your body fat distribution pattern. WHR is a key indicator of cardiovascular health and metabolic risk.
Find your ideal sleep duration based on your age group. Uses National Sleep Foundation guidelines for recommended sleep hours by age.
Calculate your estimated due date using Naegele's rule based on your last menstrual period and cycle length.
Calculate A Body Shape Index (ABSI) using waist circumference, weight, and height to estimate health risk
Calculate BMI percentile for children and adolescents using age and gender-adjusted CDC-based reference
Calculate Body Mass Index (BMI) for men with muscle-mass considerations
Calculate target weight to reach a desired BMI and the amount of weight to lose or gain
Calculate Body Mass Index (BMI) for women with body fat distribution context
Determine body shape type using bust, waist, and hip measurements
Estimates 10-year CHD risk using a simplified Framingham point system based on age, cholesterol, blood pressure, and risk factors
Screening tool for postnatal depression — 10 self-rated questions assessing depressive symptoms over the past 7 days
Calculate FFMI and normalized FFMI from weight, height, and body fat percentage
Generalized Anxiety Disorder 7-item scale — screens for anxiety severity over the past 2 weeks
Calculate BMI for older adults using geriatric-adjusted categories
Calculates mean arterial pressure from systolic and diastolic blood pressure readings
Estimates maximal oxygen uptake (VO₂max) using resting heart rate and the Tanaka HRmax formula
Patient Health Questionnaire 9-item scale — screens for depression severity over the past 2 weeks
Calculate Ponderal Index (PI) — weight divided by height cubed, used for neonates and tall individuals
Calculates target heart rate zones using the Karvonen formula based on age, resting heart rate, and exercise intensity
Calculate waist-to-height ratio (WHtR) as a measure of central obesity and health risk
Calculate percentage of body weight lost between starting and current weight
Estimate calories burned during common physical activities based on weight and duration.
Calculate your body fat percentage using the US Navy circumference method. Uses waist, neck, height, and hip measurements.
Calculate your ovulation day and fertile window based on your cycle length. Plan conception or track fertility naturally.
Calculate the best time to wake up based on 90-minute sleep cycles. Wake up refreshed by aligning with your REM cycles.