Health & Fitness
13 toolsAI Posture Coach — Real-Time Ergonomic Posture Monitor & Focus Timer
Free, private, serverless AI posture coach. Monitor sitting posture in real-time using your webcam, receive slouching alerts, and track focus with a Pomodoro timer — 100% in-browser.
Age Calculator — Exact Chronological Age in Years, Months, Days & Hours
Free chronological age calculator. Calculate exact age in years, months, days, total hours, minutes, day of birth, zodiac sign, and birthday countdown. 100% private in-browser tool.
BMI Calculator — Free Body Mass Index & Healthy Weight Tool
Free serverless BMI calculator — calculate your Body Mass Index with metric or imperial units instantly. Visual BMI scale, clinical category classification, and healthy weight range with 100% private in-browser computation.
Body Fat Calculator — Free US Navy Method Percentage Tool
Free serverless body fat calculator using the validated US Navy circumference method. Calculate body fat percentage, lean body mass, and fat mass instantly with 100% private in-browser computation.
Calorie Calculator — Free TDEE, BMR & Daily Calorie Deficit Tool
Free calorie calculator to find your exact BMR, TDEE, and daily caloric deficit or surplus for fat loss, muscle gain, or maintenance. 100% private and serverless in-browser tool.
Continuous Noise & Tinnitus Notch Masker — In-Browser Sound Therapy
Free, private, serverless in-browser therapeutic noise generator and tinnitus notch sound therapy. Synthesize continuous Brown, Pink noise and tailor-made notch filters.
Habit Tracker — Daily Habit Streaks, Calendar Heatmap & Analytics
Free, private, serverless daily habit tracker with streaks, calendar heatmaps, completion analytics, and JSON backup — 100% in-browser.
Heart Rate Zone Calculator — Free Karvonen Target Heart Rate Training Zones
Free heart rate zone calculator using the Karvonen formula and Heart Rate Reserve (HRR). Calculate 5 personalized cardiovascular training zones. 100% private and serverless in-browser tool.
Ideal Weight Calculator — Free Clinical Formula & Healthy BMI Range Tool
Free ideal weight calculator comparing Devine, Robinson, Miller, and Hamwi formulas with WHO healthy BMI ranges. 100% private and serverless in-browser tool.
Macro Calculator — Free Flexible Dieting & Macronutrient Gram Split Tool
Free macro calculator to calculate exact daily grams of protein, carbohydrates, and healthy fats based on caloric targets and fitness goals. 100% private and serverless in-browser tool.
Pace Calculator — Free Running, Cycling & Race Split Time Tool
Free pace calculator for runners and cyclists. Calculate running pace, finish time, splits, and distance in km and miles. 100% private and serverless in-browser tool.
Sleep Cycle Calculator — Free Bedtime & Wake Up Time Tool
Free sleep cycle calculator based on 90-minute REM sleep cycles. Calculate the best bedtime or wake up time without morning grogginess. 100% private and serverless in-browser tool.
Water Intake Calculator — Daily Hydration Formula
Free online water intake calculator. Calculate your daily hydration requirement based on weight, age, activity, and climate with 100% serverless privacy.
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