Health Calculators
Health and fitness calculators for BMI, body composition, calories, nutrition, sleep, and pregnancy. Discover the most precise tools for your daily and professional needs.
Menstrual Cycle Calculator
Track menstrual cycle and calculate next period date
Bra Size Calculator
Calculate correct bra size and size guide
BMI Calculator
Calculate BMI using your height and weight information
Age Calculator
Calculate precise age based on birth date
HOMA-IR Calculator
Calculate HOMA-IR for insulin resistance assessment
One Rep Max Calculator
Calculate maximum weight you can lift in one repetition
Calorie Needs Calculator
Calculate daily calorie needs (BMR, activity factor)
Water Intake Calculator
Calculate daily water needs (age, weight, activity)
Ideal Weight Calculator
Calculate ideal weight range (different formulas)
BMR Calculator
Calculate BMR (Harris-Benedict, Mifflin-St Jeor)
Body Fat Calculator
Calculate body fat percentage (different methods)
Muscle Mass Calculator
Muscle mass analysis and calculation
Pregnancy Calculator
Pregnancy week and estimated due date
Due Date Calculator
Calculate estimated due date (last menstrual period)
Menstrual Tracker
Menstrual cycle tracking and analysis
Sleep Needs Calculator
Calculate sleep needs by age
Exercise Calorie Calculator
Calculate activity calories (MET values)
Protein Needs Calculator
Calculate daily protein needs
Carb Needs Calculator
Calculate daily carbohydrate needs
Fat Needs Calculator
Calculate daily fat needs
Smoking Cost Calculator
Calculate the cost of smoking on your budget
Ovulation Calculator
Most fertile days and ovulation calendar
Sleep Calculator
Calculate ideal sleep hours and REM cycles
Blood Alcohol Calculator
Calculate estimated blood alcohol content (BAC)
Why Choose Our Health Tools?
Precise Algorithms
Works with 100% accuracy using the latest formulas.
Mobile Compatible
Shows the best performance on all devices, always.
Completely Free
Use unlimited without any registration or hidden fees.
"Achieve professional standards in your calculations."
Frequently Asked Questions
What does the Health section include?
Free health and fitness calculators for BMI, body fat, calories, BMR, macros, sleep, and pregnancy. Clear results for healthier choices.
Are the Health calculators free?
Yes. Every health calculator on Scientific Calculator is free to use and does not require an account.