Fitness and nutrition calculators
Browse the full calculator library and move through the tools in a simple, beginner-friendly order.
Best starting point
Start with TDEE, then move to calorie deficit, macros, and protein if you want a simple progression.
Practical calculators
The tools are built to give useful estimates without turning the site into something complicated.
Use with the guides
The guide pages explain the key ideas so the results make more sense in context.
Calories and planning
These tools help you estimate maintenance, fat-loss targets, and realistic timelines.
TDEE Calculator
Estimate daily maintenance calories from your age, sex, height, weight, and activity level.
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Calorie Deficit Calculator
Turn your maintenance calories into a practical fat-loss target.
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Maintenance Calories Calculator
Estimate how many calories you may need to maintain your current weight.
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Goal Weight Timeline Calculator
Estimate how long reaching your goal weight may take using a realistic weekly pace.
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Nutrition tools
These tools help turn calorie targets into practical nutrition numbers.
Macro Calculator
Split your calorie target into protein, carbs, and fat using simple presets.
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Protein Intake Calculator
Estimate a daily protein target based on your body weight and goal.
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Water Intake Calculator
Estimate a practical daily fluid target using simple hydration guidance.
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Body metrics
These tools give a simple screening view of body-size based numbers.