Unlock Your Fitness Potential
Accurate, easy-to-use health and fitness calculators designed to help you understand your body and achieve your goals.
Why Use Our Calculators?
Science-Based
All calculators use established formulas backed by scientific research.
Easy to Use
Simple interfaces with clear explanations make tracking your fitness journey effortless.
Comprehensive
From body composition to nutrition planning, we cover all aspects of fitness.
Our Calculators
BMI Calculator
Calculate your Body Mass Index.
BMR Calculator
Estimate your Basal Metabolic Rate.
TDEE Calculator
Determine your Total Daily Energy Expenditure.
Macro Calculator
Calculate your macronutrient needs.
Body Fat Calculator
Estimate body fat percentage (Navy method).
Lean Body Mass
Calculate your Lean Body Mass (Boer).
Ideal Weight
Estimate your ideal body weight (Devine).
Waist-to-Hip Ratio
Calculate your Waist-to-Hip Ratio (WHR).
Waist-to-Height Ratio
Calculate your Waist-to-Height Ratio (WHtR).
Body Surface Area
Calculate Body Surface Area (Du Bois).
Calories Burned
Estimate calories burned during activities.
One Rep Max (1RM)
Estimate your one-repetition maximum lift.
Pace Calculator
Calculate your running/walking pace.
Protein Intake
Calculate your daily protein needs.
Carbohydrate Intake
Calculate your daily carb needs.
Weight Loss Time
Estimate time to reach your weight goal.
GFR Calculator
Estimate Glomerular Filtration Rate (CKD-EPI).
Food Search
Search nutritional info for foods (USDA).
Comprehensive Fitness Resources
Explore our complete fitness ecosystem with guides, food database, exercise library, and workout plans to support your fitness journey.