Free Fitness Calculators
Practical tools to estimate calories, macros, and training targets. No account needed.
4 calculators available now. More on the way.
Nutrition & Diet
Knowing your calorie needs is the first step toward any fitness goal. These calculators help you find your daily targets for calories, protein, and macros so you can build a diet plan that matches your body and your goal.
TDEE Calculator
Find your daily calorie needs based on body stats, lifestyle, and training frequency.
Use calculator →Protein Intake Calculator
Find your optimal daily protein target based on body weight and training goal.
Coming SoonCalorie Deficit Calculator
Calculate your ideal calorie deficit for sustainable fat loss without muscle loss.
Coming SoonMacro Split Calculator
Get your protein, carb, and fat targets based on your calories and goal.
Coming SoonBMR Calculator
Calculate your basal metabolic rate, the calories you burn at complete rest.
Coming SoonCalorie Surplus Calculator
Find the right surplus for lean bulking without gaining excess fat.
Coming SoonWater Intake Calculator
Estimate daily water needs based on body weight, activity, and climate.
Coming SoonRest Day Calorie Calculator
Adjust your calorie intake on non-training days to match your actual expenditure.
Coming SoonBody Metrics & Training Estimates
Understanding your body composition helps you set honest, achievable goals. These calculators measure your muscular development, estimate your natural potential, and give you a realistic picture of what your frame can carry.
FFMI Calculator
Measure your muscular development relative to your height and frame using a validated formula.
Use calculator →Muscle Potential Estimate Calculator
See how much muscle your frame can realistically carry based on your bone structure.
Use calculator →Beginner Progress Estimate Calculator
Estimate how much muscle you can build in your first year based on your starting point.
Use calculator →Body Fat Estimate Calculator
Estimate your body fat percentage using the Navy method with neck, waist, and hip measurements.
Coming SoonIdeal Body Weight Calculator
Find a realistic target weight based on your height, frame size, and goal.
Coming SoonFrame Estimate Calculator
Determine your skeletal frame size using wrist and ankle measurements.
Coming SoonLean Body Mass Calculator
Calculate your fat-free mass to understand how much lean tissue you carry.
Coming SoonWaist-to-Hip Ratio Calculator
Assess health risk and fat distribution using a simple waist and hip measurement.
Coming SoonBody Recomposition Calculator
Get calorie and macro targets for losing fat and building muscle at the same time.
Coming SoonTraining & Performance
Once your nutrition is dialed in, these tools help you optimize your training. Estimate your max lifts, calculate training volume, and track progressive overload to keep making progress.
One Rep Max (1RM) Calculator
Estimate your one rep max for any lift based on the weight and reps you can perform.
Coming SoonTraining Volume Calculator
Calculate weekly volume per muscle group to ensure you are training in the optimal range.
Coming SoonStrength Standards Calculator
See how your lifts compare to strength standards for your body weight and experience level.
Coming SoonProgressive Overload Tracker
Track whether you are progressively overloading across weeks for each exercise.
Coming SoonHow to Use These Calculators Together
Each calculator answers a different question. Used together, they help you build a clearer picture of your starting point and the tools you may want to use next.
Start with your TDEE
Your Total Daily Energy Expenditure is an estimate of how many calories you burn each day. Use the TDEE Calculator as a starting point for calorie planning.
Review your frame and current metrics
Tools like the Natural Muscle Estimate Calculator and FFMI Calculator can give you additional context around body structure and current estimates.
Use beginner-focused estimates when relevant
If you are new to training, the Beginner Progress Estimate Calculator can provide a general estimate to help you set more grounded short-term expectations.
Build a meal plan around your selected targets
Once you have calorie and macro estimates, you can use the Free Diet Builder to turn them into a structured meal plan.
Frequently Asked Questions
Are these calculators accurate?
These calculators use established formulas and published methods to provide starting estimates. They are not exact predictions, but they can be useful for planning and general reference.
Do I need to create an account?
No. All calculators are free and require no login or signup. Enter your data, get your results, and use them however you like.
What is the difference between TDEE and BMR?
BMR (Basal Metabolic Rate) is an estimate of the calories your body burns at complete rest. TDEE (Total Daily Energy Expenditure) adds daily movement and exercise on top of that. For most users, TDEE is the more practical starting estimate for calorie planning.
Can beginners use these tools?
Yes. These tools are designed for different experience levels. Many beginners start with the TDEE Calculator for calorie estimates, then use other calculators as general reference points.
How often should I recalculate?
You can recalculate whenever your body weight, activity level, or routine changes meaningfully. Many users revisit their estimates from time to time as their training and planning needs change.
What should I do after getting my numbers?
Once you have your calorie and macro estimates, you can use them as a starting point for meal planning. The Free Diet Builder helps you create a structured plan using your exact targets. helps you build a structured plan around your selected targets. For a fuller walkthrough, you can also read our guide on creating a gym diet plan.
Turn Estimates Into a Plan
Use your calorie and macro estimates to build a meal plan that fits your routine.