About Health & Fitness Calculators
Monitor and improve your health with our collection of health and fitness calculators. Track your BMI, calculate daily calorie needs, determine your ideal weight, and more. All tools are free, require no registration, and provide instant results.
Available Tools (12)
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Enter your height and weight to find out if you'r…
Calorie Calculator
Calculate how many calories you need per day to lose weight, maintain, or gain muscle. Based on y…
Body Fat Calculator
Calculate your body fat percentage using the US Navy method. Enter measurements to estimate body …
Ideal Weight Calculator
Calculate your ideal body weight using multiple scientific formulas. Find the healthy weight rang…
Water Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate.
Heart Rate Calculator
Calculate your target heart rate zones for exercise. Find fat-burning, cardio, and peak heart rat…
Protein Calculator
Calculate how much protein you need daily for your fitness goals. Customize for weight loss, main…
Macro Calculator
Calculate your daily macronutrient needs – protein, carbs, and fat. Customize for different diet …
Pregnancy Calculator
Calculate your pregnancy due date based on your last menstrual period. See current week and pregn…
Ovulation Calculator
Calculate your ovulation date and fertile window. Track your most fertile days for conception pla…
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) – the calories your body burns at rest. Uses Mifflin-St…
Sleep Calculator
Calculate the best times to sleep and wake up based on sleep cycles. Wake up refreshed by timing …
Features
- All tools are completely free to use
- No registration required
- Instant results with no page reloads
- Works on desktop, tablet, and mobile
- Dark mode support
Frequently Asked Questions
Should I rely on these calculators for medical decisions?
These calculators provide general guidance based on standard formulas. They are not a substitute for professional medical advice. Always consult healthcare providers for health-related decisions.
How accurate are the health calculations?
The calculators use widely-accepted formulas (like the BMI formula or Harris-Benedict equation). However, individual factors like muscle mass, health conditions, and genetics can affect accuracy.