Health & Fitness Calculators
Accurate tools to track your health, fitness, and nutrition. Calculate your BMI, calorie needs, track your pregnancy, and reach your goals.
Take Control of Your Health
✓ Scientifically Accurate
Our calculators use scientifically validated formulas (Mifflin-St Jeor, Harris-Benedict, Navy Method) trusted by health professionals worldwide.
✓ Complete Privacy
Your health data is sensitive. All calculations happen locally in your browser. We never store or transmit your personal information.
✓ Free Forever
No registration, no hidden fees, no limits. Access all 30+ health and fitness calculators completely free, anytime you need them.
Achieve Your Wellness Goals
Whether you're tracking weight loss, planning a pregnancy, optimizing your nutrition, or improving fitness performance, our comprehensive suite of health calculators provides the insights you need. Get personalized results based on your unique body metrics and goals.
All Our Health & Fitness Tools
BMI Calculator
Calculate your Body Mass Index (BMI) to check if you are at a healthy weight.
Calorie Calculator
Estimate your daily calorie needs based on your activity level.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
BMR Calculator
Calculate your Basal Metabolic Rate (calories burned at rest).
Macro Calculator
Calculate your optimal macronutrient ratios (protein, carbs, fats).
Ideal Weight Calculator
Find your ideal weight range based on various formulas.
Pregnancy Calculator
Track important pregnancy milestones and dates.
Pregnancy Weight Gain
Estimate healthy weight gain during pregnancy.
Pregnancy Conception
Estimate conception date based on due date or ultrasound.
Due Date Calculator
Calculate your baby's due date.
Pace Calculator
Calculate running pace, time, or distance.
Army Body Fat
Estimate body fat percentage using US Army standards.
Carbohydrate Calculator
Estimate your daily carbohydrate needs.
Lean Body Mass
Calculate your lean body mass (weight without fat).
Healthy Weight
Determine a healthy weight range for your height.
Calories Burned
Estimate calories burned during various activities.
One Rep Max
Estimate your one-repetition maximum for weightlifting.
Target Heart Rate
Calculate your target heart rate zones for exercise.
Protein Calculator
Estimate your daily protein requirements.
Fat Intake Calculator
Calculate your recommended daily fat intake.
TDEE Calculator
Calculate your Total Daily Energy Expenditure.
Ovulation Calculator
Estimate your most fertile days.
Conception Calculator
Find the best dates to conceive.
Period Calculator
Predict your next menstrual period.
GFR Calculator
Estimate Glomerular Filtration Rate (kidney function).
Body Type Calculator
Determine your body shape/type.
Body Surface Area
Calculate the total surface area of your body.
BAC Calculator
Estimate Blood Alcohol Content.
Weight Watcher Points
Calculate Weight Watchers points for food.
Overweight Calculator
Assess if you are overweight based on BMI and other factors.
Frequently Asked Questions
How to calculate my BMI?
Body Mass Index (BMI) is calculated by dividing your weight (kg) by the square of your height (m). Our calculator does it instantly for you.
How many calories should I eat per day?
It depends on your age, gender, weight, height, and activity level. Use our calorie calculator to get an accurate estimate tailored to your goals.