Health Calculators
Track Your Health & Wellness
48 calculators
Available Tools
BMI Calculator
Free BMI calculator. Calculate your Body Mass Index and get health recommendations.
Calorie Calculator
Free calorie calculator for BMR, TDEE, and personalized daily calorie goals.
Age Calculator
Free age calculator. Calculate your exact age in years, months, days, hours and minutes from your birth date.
Date Calculator
Calculate date differences, add or subtract days from dates, and find days between two dates. Perfect for planning deadlines, events, and countdowns.
Body Fat Calculator
Free body fat percentage calculator. Calculate body fat using US Navy method or BMI estimation. Get fat mass, lean mass, and body composition analysis.
Ideal Weight Calculator
Free ideal weight calculator. Calculate ideal body weight using Robinson, Miller, Devine, and Hamwi formulas. Compare with healthy BMI weight range.
BMR Calculator
Free BMR calculator. Calculate basal metabolic rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas. Know your resting calorie burn.
TDEE Calculator
Free TDEE calculator. Find your Total Daily Energy Expenditure and determine calories burned daily for weight loss or muscle gain.
Lean Body Mass Calculator
Free lean body mass calculator. Calculate LBM, fat mass, and body composition percentage. Track your muscle mass progress.
Waist-Hip Ratio Calculator
Free waist-hip ratio calculator. Calculate WHR, assess health risk, and understand body fat distribution patterns.
Body Surface Area Calculator
Free body surface area calculator. Calculate BSA using height and weight for medical dosing and health monitoring.
Heart Rate Calculator
Free heart rate calculator. Calculate max HR, target zones, and workout intensity ranges for cardio training.
Running Pace Calculator
Free running pace calculator. Calculate pace per km and mile, speed in km/h and mph, plus split times for 5K, 10K, half marathon, and marathon.
Calories Burned Calculator
Free calories burned calculator. Calculate calories burned for running, cycling, swimming, and 15+ activities using MET values. Compare activity efficiency.
One Rep Max Calculator
Free one-rep max calculator to estimate your maximum lifting strength using Brzycki, Epley, and other formulas.
Macro Calculator
Find your ideal macro split based on your goals. Customizable protein, carbs, and fat for cutting, bulking, or maintenance.
Protein Calculator
Free protein calculator to determine your optimal daily protein intake based on weight and fitness goals. Includes food sources.
Water Intake Calculator
Free water intake calculator to determine daily hydration goals.
Steps to Calories Calculator
Free steps to calories calculator to estimate calories burned from your daily steps.
Pregnancy Calculator
Free pregnancy calculator to find your due date and track pregnancy stages.
Ovulation Calculator
Free ovulation calculator to find your fertile window and ovulation date.
Sleep Calculator
Free sleep calculator to find the best time to sleep based on 90-minute cycles.
Blood Alcohol Calculator
Free BAC calculator to estimate your blood alcohol content and understand impairment levels.
Medication Dosage Calculator
Free medication dosage calculator. Calculate drug doses by weight or concentration. Includes volume calculation and daily dosing frequency.
Period Calculator
Free period calculator and cycle tracker. Predict next period, ovulation day, and fertile window. Track your menstrual cycle for up to 12 months ahead.
Weight Loss Calculator
Free weight loss calculator. Calculate daily calories needed, time to reach goal weight, and get a week-by-week projection. Safe, science-based approach.
A1C Calculator
Free A1C calculator. Convert between A1C and average blood glucose (eAG). Check diabetes risk categories and understand your 3-month blood sugar average.
Keto Calculator
Free keto macro calculator. Calculate daily fat, protein, and net carb targets for the ketogenic diet based on your body composition and goals.
Blood Pressure Calculator
Free blood pressure calculator. Check if your blood pressure is normal, elevated, or high. Get pulse pressure, MAP, and health recommendations.
Fertility Calculator
Free fertility calculator. Find your ovulation date, fertile window, best days to conceive, and estimated due date. Track your menstrual cycle for conception.
Pregnancy Weight Gain Calculator
Free pregnancy weight gain calculator. Find healthy weight gain based on BMI and week of pregnancy. IOM guidelines for singleton, twins, and triplets.
Child Growth Percentile Calculator
Free child growth calculator. Find your child's weight and height percentiles using CDC/WHO growth charts. Track development from birth to 18 years.
VO2 Max Calculator
Free VO2 max calculator. Estimate your maximal oxygen uptake with Cooper test, Rockport walk test, or beep test. Compare your cardiovascular fitness level.
Body Frame Size Calculator
Free body frame calculator. Determine if you have a small, medium, or large frame using wrist or elbow measurements. Get ideal weight range for your frame size.
Macro Ratio Calculator
Free macro ratio calculator. Find your ideal protein, carbs, and fat ratios for weight loss, muscle gain, keto, or maintenance. Get per-meal macro targets.
Intermittent Fasting Calculator
Free intermittent fasting calculator. Plan your 16:8, 18:6, 20:4, or OMAD fasting schedule. See eating windows, fasting benefits, and optimize your IF routine.
Bra Size Calculator
Free bra size calculator. Measure your band and bust to find your perfect bra size in US, UK, EU, and international sizing. Get sister size recommendations.
Pace Calculator
Free pace calculator. Find your running pace, speed, distance, or time. Convert between min/mile, min/km, mph, and km/h for running, walking, or cycling.
Target Heart Rate Calculator
Free target heart rate calculator. Find your optimal heart rate zones for fat burning, cardio, and peak performance.
Shoe Size Calculator
Free shoe size calculator and converter. Convert between US, UK, EU, and CM sizes for men, women, and kids. Measure foot length to find your perfect fit.
Blood Sugar Converter
Free blood sugar converter. Convert glucose levels between mg/dL and mmol/L. See normal ranges for fasting, post-meal, and A1C with diabetes risk assessment.
Body Type Calculator
Free body type calculator. Determine your somatotype (ectomorph, mesomorph, endomorph) based on measurements. Get personalized diet and workout recommendations.
Caffeine Calculator
Calculate safe caffeine intake based on your weight. Track daily consumption and see how caffeine affects your sleep.
Hydration Calculator
Calculate your daily water needs based on weight, activity level, climate, and lifestyle factors. Get a personalized hydration schedule.
Sleep Debt Calculator
Calculate your sleep debt and create a recovery plan. Track weekly sleep patterns and get personalized recommendations for better rest.
Heart Rate Zone Calculator
Calculate your heart rate training zones for optimal fitness. Get personalized cardio zones for fat burning, endurance, and performance.
Breathing Exercise Calculator
Free breathing exercise calculator with guided techniques. Practice box breathing, 4-7-8 relaxation, and custom breathing patterns for stress relief.
Due Date Calculator
Free pregnancy due date calculator. Calculate your expected delivery date based on last period, conception, or ultrasound.