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View All ›Advanced BMI & Body Metrics Calculator
Metric/Imperial toggle, BMR, ideal weight range, daily calorie needs, age & gender adjustment. Instant results, color‑coded category, tips slider.
Sleep Cycle Optimizer – Wake Up & Bedtime Planner
Find optimal bed/wake times, nap mode, 'Sleepy Now' quick‑calculate, sleep tips slider, share results.
Heart Rate Zone Calculator
Find your max HR, resting HR, and training zones (fat burn, cardio, peak). Multiple methods, real‑time, copy/share.
Ideal Weight & Body Fat Calculator
Calculate ideal weight range, body fat percentage (US Navy method), lean body mass. Multiple units, copy/share.
Water Intake & Hydration Calculator
Daily water need based on weight, activity, climate. Tips slider, copy/share, reset. Multiple units.