Manish Kumar 
☕ Caffeine Half-Life Calculator Advanced caffeine metabolism tracker with realistic 60-minute absorption modeling. Monitor your caffeine levels throughout the day and optimize your consumption for better sleep. ⏱️ Personal Settings 🧬 Your Caffeine Half-Life (hours) Average is 5.7 hours. Varies by genetics, age, and health factors. 🌙 Your Bedtime Your typical bedtime for personalized sleep …
Rest & Sleep Energy Calculator Discover your energy expenditure during rest and sleep activities. Input your details below for personalized results based on scientific metabolic data. Select Rest Activity Choose your rest activityDeep SleepComplete Rest (No Activity)Light Rest with TV/ScreenRest with Audio EntertainmentRest while Reading Body Mass Unit Kilograms (kg) Pounds (lb) Your Body Mass …
Treadmill Calorie Burn Calculator Calculate calories burned during treadmill running using official MET values from the Compendium of Physical Activities. Choose your speed, incline, and workout type for accurate results. Your Weight Kilograms Pounds Enter your current body weight Running Speed Select running speedJog/walk combination (6.0 MET)Jogging, general pace (7.5 MET)Jogging in place (4.8 MET)Running …
🔥 BMR Calculator Calculate your Basal Metabolic Rate using scientifically validated equations. Discover how many calories your body burns at rest and plan your nutrition accordingly. 🎂 Age Age in years (affects metabolic rate calculation) 👤 Gender Select GenderMaleFemale Required for accurate BMR calculation (different equations used) ⚖️ Weight KG LBS Your current body weight …
Calories Burned Kayaking Calculator Discover your energy expenditure during kayaking sessions with our advanced calculator. Input your details below for personalized results. Weight Unit Kilograms (kg) Pounds (lb) Your Weight Kayaking Type Choose your kayaking intensityCasual Paddling – Scenic touring (< 2 mph)Steady Paddling – Recreational (2-4 mph)Active Paddling – Fitness pace (4-6 mph)Power Paddling ... Read more
Dumbbell to Barbell Weight Converter Convert dumbbell weights to equivalent barbell loads for strength training. Get accurate conversions based on exercise biomechanics and muscle activation patterns. 💪 Exercise Type Select ExerciseChest Press / Bench PressRowing / Bent-Over RowShoulder Press / Overhead PressBicep CurlTricep ExtensionChest FlyeLateral RaiseLungeSquatRomanian Deadlift Different exercises have different conversion ratios ⚖️ Weight …
RPE Calculator – Rating of Perceived Exertion Calculate your personalized exercise intensity zones using the scientifically validated Borg RPE Scale (6-20). Based on peer-reviewed research and validated against cardiopulmonary exercise testing for accurate training prescription. 📊 Calculator Mode Strength RPE (1–10 with RIR): Resistance Training Modified RPE (0–10): Cardio Training Choose the appropriate RPE scale …
Kickboxing Calories Burned Calculator Calculate calories burned during kickboxing training using official MET values from the Compendium of Physical Activities. Your Weight Kilograms Pounds Enter your current body weight Training Type Select training typeLight Bag Work/Shadow Boxing (5.8 MET)General Kickboxing Training (7.3 MET)Pad Work/Mitt Training (7.8 MET)High-Intensity Drills (9.3 MET)Moderate Sparring (10.3 MET)Competitive Sparring (12.3 …
Aerobic Stepper Workout Calorie Burn Discover your energy expenditure during step aerobics. Enter your personal details to get a comprehensive breakdown of your cardiovascular training intensity and calorie burn. Weight Unit Kilograms (kg) Pounds (lb) Your Weight Training Intensity Profile Select your step configuration and effort levelFoundation Level: 4-inch adaptive stepping (30-40 steps/min)Performance Level: 6-8 …
9-Site Skinfold Calculator Calculate your body fat percentage using the comprehensive Parrillo 9-site skinfold method for detailed body composition analysis Age Age in years (16-75 years old for Parrillo method) Gender Select GenderMaleFemale Required for accurate body fat calculation Measurement Units MM INCHES Choose your preferred measurement unit for skinfold measurements Chest Skinfold Diagonal fold …