Health & Body
30 free tools — fitness, nutrition, pregnancy, sleep and medical calculators.
Body Metrics
BMI Calculator
Calculate Body Mass Index with WHO and Indian-specific cutoffs.
BMR Calculator
Find your Basal Metabolic Rate — calories your body burns at rest.
Ideal Weight Calculator
Find your ideal weight range using multiple formulas (Robinson, Miller, Hamwi).
Body Fat Calculator
Estimate body fat percentage using the US Navy circumference method.
Waist-Hip Ratio Calculator
Check your waist-to-hip ratio and cardiovascular risk category.
Body Surface Area Calculator
BSA using Mosteller, DuBois, Boyd and Haycock formulas — used in drug dosing.
Child Growth Percentile
Check your child's height and weight percentile versus CDC growth chart data.
Nutrition & Fitness
Calorie Needs Calculator
Daily calorie needs using Harris-Benedict equation with TDEE activity multipliers.
Water Intake Calculator
Daily water intake recommendation based on weight, activity and climate.
Protein Intake Calculator
Calculate daily protein needs for muscle building, maintenance or weight loss.
Calorie Burn Calculator
Calories burned per hour for 30+ activities based on your weight and duration.
Fasting Tracker
Eating and fasting windows for 16:8, 18:6, 20:4, OMAD and 5:2 protocols.
Women's Health
Due Date Calculator
Pregnancy due date from LMP or conception date using Naegele's rule.
Pregnancy Week Calculator
Track pregnancy week by week — gestational age, trimester and weeks remaining.
Ovulation Calculator
Predict ovulation and fertile window based on cycle length.
Menstrual Cycle Tracker
Track your menstrual cycle and predict next period start date.
Heart & Vitals
Converters
Height Converter
Convert height between cm, feet/inches, and metres instantly.
Weight Converter
Convert weight between kg, lbs, stone, and grams.
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin for medical readings.
Treadmill Pace Converter
Convert treadmill speed (km/h) to pace (min/km, min/mile) bidirectionally.
Sleep & Lifestyle
Sleep Cycle Calculator
Find optimal wake-up times aligned with your 90-minute sleep cycles.
Medicine Dose Timer
Track medication schedules and get reminders for next dose times.
UV Index Timer
Safe sun exposure time calculator based on UV index, skin type and SPF.
Steps to km Calculator
Convert daily steps to distance using height-based stride estimation.