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Accurate BMI, body fat percentage, calorie maintenance, deficit targets, and workout habit trackers.
Achieve body recomposition, muscle hypertrophy, or fat loss with clinically validated body metric and nutrition calculations.
Calculate your maintenance calories (TDEE) and target daily caloric deficit for lean cuts.
Compare BMI against Navy body fat equations for accurate athletic physical assessment.
Track workout streaks and daily water goals using the local browser Habit Tracker.
Every tool runs 100% locally in your browser with zero latency and complete privacy.
Calculate Body Mass Index and healthy weight range.
Estimate body fat percentage.
Calculate daily caloric needs.
Calculate daily calorie deficit target and projected weight loss weeks.
Track daily habits and streaks.
Precise online stopwatch with millisecond accuracy and laps.
Common questions about using our tools for gym enthusiasts & bodybuilders.
Use our Calorie Calculator to determine your TDEE maintenance baseline, then subtract 300 to 500 calories for a sustainable fat loss deficit.
Standard BMI often classifies muscular lifters as overweight. We recommend using our Body Fat Calculator alongside BMI for true athletic body assessment.
Discover specialized browser toolkits tailored for different workflows.