BMI Calculator
Calculate your Body Mass Index and see where you fall on the health scale.
Use Tool →TDEE Calculator
Find out how many calories you burn per day including exercise.
Use Tool →Macro Calculator
Get your protein, carbs, and fat split for any fitness goal.
Use Tool →1RM Calculator
Estimate your one-rep max and get training percentages.
Use Tool →Body Fat Calculator
Estimate body fat %, lean mass, and FFMI using the Navy method.
Use Tool →Heart Rate Zones
Find your 5 personalized training heart rate zones.
Use Tool →Free Fitness Calculators by GMS
Global Muscle Summit provides free, science-backed fitness calculators to support your training and nutrition goals. Whether you're a beginner starting your fitness journey or a certified personal trainer working with clients, these tools give you the data you need to make informed decisions.
All calculators use peer-reviewed formulas: the Mifflin-St Jeor equation for TDEE, the Epley formula for one-rep max estimation, the U.S. Navy method for body fat percentage, and the Karvonen formula for heart rate zones.
For professional-grade knowledge and skills, explore our certification guides and training programs.