Track Your Health
24 evidence-based health calculators for BMI, calories, macros, hydration, pregnancy, fitness, and more.
All Health Calculators (24 tools)
BMI Calculator
Body Mass Index calculator with healthy weight ranges and visual feedback.
Calorie Calculator
Daily calorie needs (TDEE) based on age, weight, height and activity level.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method with measurements.
BMR Calculator
Calculate Basal Metabolic Rate — calories your body burns at complete rest.
Water Intake Calculator
Calculate your recommended daily water intake based on weight, activity, and climate.
Ideal Weight Calculator
Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas.
Pregnancy Due Date Calculator
Calculate your estimated due date, conception date, and current trimester.
Sleep Calculator
Calculate optimal bedtime or wake-up time based on 90-minute sleep cycles.
Calorie Deficit Calculator
Calculate your calorie deficit for weight loss with weekly fat loss projections.
Ovulation Calculator
Estimate your ovulation day, fertile window, and best days to conceive.
Macro Calculator
Calculate daily protein, fat, and carb targets based on your fitness goals.
Protein Intake Calculator
Calculate your daily protein needs based on weight, activity, and goals.
Steps to Calories Calculator
Convert steps walked into calories burned, distance, and time spent.
Heart Rate Zone Calculator
Calculate your 5 heart rate training zones for fat burn, cardio, and peak.
One Rep Max Calculator
Calculate your one-rep max using Brzycki, Epley, and Lombardi formulas.
Alcohol Units Calculator
Calculate alcohol units consumed and compare against weekly guidelines.
Period Calculator
Predict your next period, fertile window, and ovulation date.
Running Pace Calculator
Calculate running pace, finish time, and splits for any distance.
Calories Burned Calculator
Calculate calories burned for 30+ activities based on weight and duration.
TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) for fat loss or muscle gain.
Pregnancy Weight Gain Calculator
Track healthy pregnancy weight gain based on your pre-pregnancy BMI.
Conception Date Calculator
Estimate your exact conception date based on your ultrasound or due date.
BAC Calculator
Estimate your Blood Alcohol Content (BAC) based on weight and drinks consumed.
VO2 Max Calculator
Calculate your cardiovascular fitness level and VO2 Max estimate.
Explore Other Categories
Discover more free tools across all our calculator categories.