Health Tools
Track and plan health metrics: BMI/BMR, calories, hydration and more—simple interfaces with clinically familiar formulas.
29 tools available
Track and plan health metrics: BMI/BMR, calories, hydration and more—simple interfaces with clinically familiar formulas.
Audio Tools 1
Professional white noise generator with pink, brownian noise, binaural beats, 10-band EQ, and lowpass filter. Export to MP3, WAV, OGG. Free online sleep and focus sounds.
Calculators 27 Health & Fitness 27Calculate recommended infant feeding amounts based on age and weight. Get personalized formula and milk intake guidelines for babies 0-24 months.
Calculate daily calorie needs for children and teens. Determine recommended calories, macros, and nutrition requirements based on age, activity level, and goals.
Calculate baby growth percentiles for length, weight, and head circumference using WHO standards. Track infant development from 0-36 months.
Calculate BMI percentile for children and teens aged 2-20 years. Determine weight category using CDC growth charts and BMI-for-age standards.
Calculate child growth percentiles and Z-scores using WHO growth standards. Track height and weight development for children 0-19 years old.
Calculate your one rep max (1RM) using multiple formulas including Epley, Brzycki, and more. Get personalized training weights for strength, hypertrophy, and endurance. Free 1RM calculator for weightlifting.
Calculate your Body Mass Index (BMI) and determine your weight category and health risks. Free online BMI calculator with detailed health risk assessment.
Calculate your Basal Metabolic Rate (BMR) using multiple formulas including Mifflin-St Jeor, Harris-Benedict, and more. Get accurate TDEE calculations for weight management.
Calculate Body Surface Area (BSA) using multiple medical formulas including Du Bois, Mosteller, and Haycock. Free BSA calculator for accurate medical dosing and assessment.
Calculate your body fat percentage using the U.S. Navy Method. Get accurate body fat estimates with measurements of height, weight, neck, waist, and hip circumference.
Find your body shape — hourglass, pear, rectangle, inverted triangle or triangle. Get personalized styling tips plus waist-hip ratio analysis for women.
Free breathing exercise timer with Box Breathing and 4-7-8 relaxation techniques. Reduce stress and anxiety with guided breathing patterns.
Calculate your daily calorie needs for weight loss, weight gain, or maintenance. Free calorie calculator with BMR, TDEE, and macronutrient breakdown. Get personalized calorie goals based on your activity level and fitness goals.
Free eye exercise timer using the 20-20-20 rule. Reduce digital eye strain by taking regular breaks. Perfect for office workers and computer users.
Calculate your healthy weight range based on BMI, age, and height. Free healthy weight calculator with visual weight status indicator and personalized recommendations.
Calculate your ideal body weight using multiple scientific formulas including Robinson, Miller, Devine, and Hamwi. Free ideal weight calculator based on height, gender, and body frame.
Free Kegel exercise timer for men. Strengthen pelvic floor muscles with guided squeeze and release cycles. Customizable hold times and rep counts.
Calculate your lean body mass (LBM) using multiple formulas including Boer, James, and Hume. Free LBM calculator to determine muscle mass and body fat percentage for fitness tracking.
Calculate your daily macronutrient needs (protein, carbs, fats) based on your goals. Free macro calculator for weight loss, muscle gain, and maintenance with personalized recommendations.
Calculate your ovulation date and fertile window to increase chances of conception. Free ovulation calculator with personalized fertility calendar and cycle tracking.
Free plank challenge timer with customizable hold times and rest periods. Build core strength with guided plank exercises for all fitness levels.
Calculate your pregnancy due date and track pregnancy milestones. Free pregnancy calculator using LMP, conception date, or ultrasound data with trimester tracking.
Calculate the best time to wake up or go to sleep based on sleep cycles. Free sleep calculator to help you wake up refreshed during light sleep phases.
Calculate your Total Daily Energy Expenditure (TDEE) and daily calorie needs based on your activity level. Free online TDEE calculator with personalized recommendations.
Free Tabata and HIIT interval timer for high-intensity workouts. Customizable work/rest intervals with audio cues. Perfect for home and gym workouts.
Calculate your target heart rate zones for different fitness goals. Free heart rate calculator with multiple formulas including Karvonen method. Get personalized training zones for fat burning, cardio, and peak performance.
Calculate your daily water intake needs based on weight, activity level, and climate. Free online water consumption calculator with personalized hydration recommendations.
Hardware Tools 1
Sensors 1Free online step counter & pedometer using accelerometer. Track steps, distance, calories burned, walking pace in real-time. No app installation needed.
Help us improve by sharing your thoughts
Your feedback has been received. We truly appreciate you taking the time to help us improve.