Fitness & Health Calculators
Use our free fitness calculators to track your health, plan your diet, and achieve your fitness goals with accurate, science-based tools.
BMI Calculator
Check whether your weight is underweight, normal, overweight, or obese.
Use CalculatorTDEE Calculator
Find your total daily calorie needs based on your activity level.
Use CalculatorCalorie Needs Calculator
Know how many calories you need to lose, maintain, or gain weight.
Use CalculatorLean Body Mass Calculator
Measure your weight without body fat for better fitness planning.
Use CalculatorProtein Intake Calculator
Calculate daily protein needs for muscle gain and fat loss.
Use CalculatorMacro Split Calculator
Get your ideal carb, protein, and fat ratio for your fitness goals.
Use CalculatorWater Intake Calculator
Know how much water your body needs daily for optimal health.
Use CalculatorHow to Use These Calculators Effectively
Start with BMI and Body Fat calculators to understand your body composition. Then calculate your calorie needs with BMR and TDEE calculators. Use Lean Body Mass, Ideal Weight, Protein, Macro, and Water Intake calculators to plan diet and track fitness goals.
Combine multiple calculators to get a complete view of your health and optimize your fitness plan.
Frequently Asked Questions
Are these fitness calculators free?
Yes! All calculators are 100% free and work on any device, including mobile phones and tablets.
Do I need to enter my units carefully?
Yes. Choose metric or US units as appropriate for accurate results.
Can I use these calculators for weight loss or muscle gain?
Absolutely. The calculators are designed for all fitness goals, including fat loss, muscle gain, or maintenance.
How accurate are these calculators?
They provide estimates based on scientific formulas and are ideal for general fitness tracking and nutrition planning.
Can I track progress over time?
Yes. Use these calculators regularly to monitor changes in your body composition and nutrition intake.