Free Health Calculators
BMI, calories, body fat, fitness, and wellness calculators. All tools are free, accurate, and require no account.
BMI Calculator
Calculate your Body Mass Index and interpret your weight category.
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Health Tools
35 calculatorsBMI Calculator
Calculate your Body Mass Index and interpret your weight category.
Calorie Calculator
Find out how many calories you need daily to reach your goals.
Calorie Deficit Calculator
Calculate your personalized calorie deficit target to lose weight safely.
BMR Calculator
Calculate your Basal Metabolic Rate to understand energy at rest.
Body Fat Calculator
Estimate your body fat percentage using measurements.
TDEE Calculator
Total Daily Energy Expenditure based on activity level.
Pregnancy Due Date Calculator
Estimate your baby's due date from last period or conception.
Ovulation Calculator
Predict your ovulation and fertile window.
Protein Calculator
Find out how much protein you need daily based on your goals.
Macro Calculator
Calculate optimal daily protein, carb, and fat intake for your fitness goals.
Ideal Weight Calculator
Find your ideal body weight using multiple medical formulas.
Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
Sleep Calculator
Find the best times to sleep or wake up based on 90-minute sleep cycles.
Heart Rate Calculator
Calculate target heart rate zones for exercise and fat burning.
Pace Calculator
Calculate running pace, speed, or finish time for any distance.
One Rep Max Calculator
Estimate your maximum lift weight from submaximal training sets.
Pregnancy Calculator
Track your pregnancy timeline with trimester milestones and key dates.
Pregnancy Weight Gain Calculator
Calculate recommended weight gain during pregnancy based on pre-pregnancy BMI.
Pregnancy Conception Calculator
Estimate when conception occurred based on your due date or last period.
Conception Calculator
Find your most fertile days and optimal conception window.
Period Calculator
Predict your next period and track your menstrual cycle patterns.
Height Calculator
Predict a child's adult height based on parental heights and current age.
Army Body Fat Calculator
Estimate body fat percentage using the U.S. Army circumference method.
Carbohydrate Calculator
Calculate your daily carbohydrate needs based on goals and activity level.
Lean Body Mass Calculator
Calculate your lean body mass using multiple estimation formulas.
Fat Intake Calculator
Calculate your recommended daily fat intake based on caloric needs.
Healthy Weight Calculator
Find your healthy weight range based on height, age, and body frame.
Calories Burned Calculator
Estimate calories burned during exercise and daily activities.
Body Type Calculator
Determine your body type — ectomorph, mesomorph, or endomorph.
Body Surface Area Calculator
Calculate body surface area using height and weight with multiple formulas.
BAC Calculator
Estimate your blood alcohol concentration based on drinks, weight, and time.
GFR Calculator
Estimate glomerular filtration rate to assess kidney function.
Overweight Calculator
Check if you are overweight and calculate how much weight to lose.
Anorexic BMI Calculator
Identify underweight BMI ranges and understand healthy weight thresholds.
Weight Watcher Points Calculator
Estimate daily points allowance and food point values for weight management.
Explore Other Categories
We cover all major calculator categories for your everyday needs.
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Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and amortization schedule.
Amortization Calculator
See your full loan amortization schedule with principal and interest breakdown by month.
Loan Calculator
Estimate monthly payments and total cost for any personal or auto loan.
Car Payment Calculator
Calculate your monthly car payment and total loan cost based on price, rate, and term.