Your trusted companion for evidence-based fitness calculations and nutritional planning
We believe that understanding your body's energy needs shouldn't require a degree in nutrition science. Our mission is to make scientifically accurate fitness calculations accessible to everyone, whether you're beginning your fitness journey or optimizing your athletic performance.
By providing free, evidence-based tools backed by peer-reviewed research, we empower individuals to make informed decisions about their nutrition and fitness goals.
All our calculators use validated formulas from peer-reviewed research, including Mifflin-St Jeor, Katch-McArdle, and other established equations used by nutrition professionals.
Our calculators consider individual factors including age, gender, activity level, and body composition to provide personalized recommendations tailored to your unique needs.
Beyond calculations, we provide comprehensive guides explaining the science behind each formula, helping you understand not just the "what" but the "why" of your results.
Your health data is personal. We process all calculations locally in your browser, ensuring your information never leaves your device unless you explicitly choose to share it.
Every formula we implement is backed by scientific research. We regularly review and update our calculators based on the latest findings in nutritional science and exercise physiology.
We listen to user feedback and continuously improve our tools. Our calculators are designed based on real needs from fitness enthusiasts, athletes, and health professionals.
From TDEE and BMR calculations to specialized tools for bulking, cutting, and body composition, we provide a complete suite of calculators for every fitness goal.
While our calculators use scientifically validated formulas, they provide estimates based on population averages. Individual metabolism can vary significantly. We always recommend:
Our calculators are built on established research from reputable sources:
We're always looking to improve our tools and help our users achieve their fitness goals.
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