Health and Fitness Calculators
Estimate BMI, calories, macros, heart-rate zones and more with well-known health formulas. These tools are for general information and never replace professional advice.
60 tools in this category
BMI Calculator
Find your body mass index.
BMR Calculator
Find your basal metabolic rate.
Daily Calorie Needs
Find your daily calorie target.
TDEE Calculator
Find your total daily energy expenditure.
Body Fat Calculator
Estimate your body-fat percentage.
Ideal Weight Calculator
Find a healthy weight range.
Waist-to-Hip Ratio
Find your health-risk ratio.
Waist-to-Height Ratio
Find a health indicator from waist and height.
Lean Body Mass
Estimate your muscle mass.
Macro Calculator
Split calories into protein, carbs and fat.
Protein Intake Calculator
Find your daily protein need.
Water Intake Calculator
Find your daily hydration target.
Calories Burned Calculator
Estimate calories burned by activity.
Steps to Calories
Convert steps into calories.
Steps to Distance
Convert steps into miles or km.
Running Pace Calculator
Find your pace per km or mile.
Race Time Predictor
Estimate a finish time.
Heart Rate Zones
Find your training heart-rate zones.
Max Heart Rate
Find your age-based maximum heart rate.
Target Heart Rate
Find your exercise heart-rate range.
VO2 Max Estimator
Estimate your VO2 max.
One-Rep-Max Calculator
Estimate your maximum lift.
Calorie Deficit Calculator
Plan a weight-loss deficit.
Weight Loss Planner
Plan a timeline to your goal weight.
Weight Gain Calculator
Plan a calorie surplus for gain.
Pregnancy Due Date
Estimate your delivery date.
Ovulation Calculator
Estimate your fertile window.
Cycle Tracker
Predict period dates.
Pregnancy Week Calculator
Find your current pregnancy week.
Child Height Predictor
Estimate a child's adult height.
Metabolic Age Estimator
Estimate a fitness-based age.
Sleep Calculator
Find ideal bed and wake times.
Sleep Cycle Calculator
Plan 90-minute sleep cycles.
Nap Time Calculator
Find the best nap length.
Blood Pressure Category
Classify a blood pressure reading.
Smoking Cost Calculator
See the money spent smoking.
Cigarette Savings Calculator
See savings from quitting.
Body Surface Area
Calculate body surface area.
Fitness Age Calculator
Compare fitness against your age.
Workout Timer (HIIT)
Run an interval workout timer.
Rest Timer
Run a set-rest countdown.
Rep Counter
Tap to count your reps.
Hydration Reminder
Set a drink-water timer.
Calorie to Exercise
See how to burn off calories.
Meal Calorie Estimator
Log calories for a meal.
Weekly Workout Planner
Build a weekly workout routine.
Stretching Timer
Time your flexibility work.
Yoga Pose Timer
Time yoga pose holds.
Breathing Exercise Timer
Guide box-breathing sessions.
Standing Desk Timer
Set sit-stand reminders.
Posture Reminder
Get stretch and posture alerts.
Pomodoro Move Breaks
Get activity reminders on breaks.
Plank Challenge Timer
Track your plank holds.
Push-Up Test Score
Benchmark your push-up score.
Daily Step Goal Tracker
Log daily steps toward a goal.
Calorie Cycling Planner
Plan weekly calorie cycling.
BMI for Kids
Estimate a child's BMI percentile.
Waist Size Health Check
Check risk by waist size.
Sober Days Counter
Count smoke or drink-free days.
Meditation Timer
Run a guided meditation countdown.