💪 Free Health & Fitness Tools
Free health and fitness calculators for BMI, calories, body composition, and fitness goals
BMR Calculator
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation.
TDEE Calculator
Calculate your Total Daily Energy Expenditure based on BMR and activity level.
Ideal Weight Calculator
Calculate your ideal body weight range based on height and gender.
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See dealsBody Fat Percentage Calculator
Estimate your body fat percentage using measurements. No equipment needed.
Lean Body Mass Calculator
Calculate your lean body mass from weight and body fat percentage.
Calorie Deficit Calculator
Calculate the calorie deficit needed to reach your weight loss goal.
Protein Intake Calculator
Calculate your daily protein needs based on weight and fitness goals.
Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
Maximum Heart Rate Calculator
Calculate your estimated maximum heart rate by age.
Target Heart Rate Calculator
Calculate your target heart rate range for aerobic exercise and fat burning.
Steps to Miles Calculator
Convert your step count to miles or kilometers based on your stride length.
Miles to Steps Calculator
Convert miles or kilometers to steps based on your stride length.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and health risk category.
One Rep Max Calculator
Estimate your 1 rep max for any lift from a submaximal set.
Daily Calorie Intake Calculator
Find your ideal daily calorie intake for your weight goals.
Running Pace Calculator
Calculate your running pace, speed, and predicted finish time for any distance.
Calories Burned Walking Calculator
Calculate calories burned walking based on weight, speed, and duration.
Calories Burned Running Calculator
Calculate calories burned running based on weight, speed, and distance.
Sleep Calculator
Calculate the best sleep and wake times based on sleep cycles.
Blood Alcohol Content Calculator
Estimate your blood alcohol content (BAC) based on drinks, weight, and time.
Macros Calculator
Calculate your ideal macros (protein, carbs, fat) based on calories and goals.
Body Surface Area Calculator
Calculate body surface area using the DuBois, Mosteller, or Haycock formula.
Ponderal Index Calculator
Calculate your Ponderal Index (corpulence index) from height and weight.
Calorie Calculator
Calculate daily calorie needs for weight loss, maintenance, or muscle gain.
Heart Rate Zone Calculator
Calculate your 5 heart rate training zones based on your maximum heart rate.
Steps to Calories Calculator
Calculate calories burned from daily step count based on weight and stride.
Running Pace Calculator
Calculate running pace, speed, and time for any distance.
Steps to Miles Calculator
Convert walking or running steps to miles and kilometers.
Nutrition Label Calculator
Calculate % Daily Value for nutrition label nutrients.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and assess cardiovascular health risk.
Blood Alcohol Content Calculator
Estimate blood alcohol content (BAC) based on drinks consumed, weight, and time.
Ideal Body Weight Calculator
Calculate ideal body weight using Hamwi, Devine, and Robinson formulas.
Ovulation Calculator
Estimate your ovulation date and fertile window based on your cycle length.
Max Heart Rate Calculator
Calculate maximum heart rate and training zones by age.
Calories Burned Cycling Calculator
Calculate calories burned while cycling based on speed, weight, and duration.
Waist Circumference Health Risk
Assess health risk based on waist circumference measurement.
VO2 Max Calculator
Estimate your VO2 max (maximal oxygen uptake) from a fitness test.
Daily Protein Calculator
Calculate recommended daily protein intake based on weight and activity level.
Dog Age Calculator
Convert your dog's age to human years based on breed size.
Macronutrient Calculator
Calculate daily macronutrient targets for your calorie and fitness goals.
Swimming Pace Calculator
Calculate swimming pace, total time, and distance for any pool workout.
Cycling Speed Calculator
Calculate cycling speed, distance, or time for any bike ride.
Dog Food Calculator
Calculate how much food to feed your dog based on weight, age, and activity level.
Blood Pressure Category Calculator
Interpret blood pressure readings and find your blood pressure category.
Skin Type Quiz
Discover your skin type with a quick quiz to find the best skincare routine.
Sprint and Race Pace Calculator
Calculate race pace, finish time, or distance for any running event.
Healthy BMI Range Calculator
Find your healthy BMI range adjusted for age, gender, and body frame.
Curl & Deadlift Max Calculator
Calculate your one rep max (1RM) for any exercise using weight and reps performed.
Keto Macro Calculator
Calculate your optimal keto macros: fat, protein, and carbs for ketogenic diet.
Walking Calorie Calculator
Calculate calories burned walking based on weight, distance, speed, and terrain.
Pregnancy Weight Gain Calculator
Calculate recommended pregnancy weight gain based on pre-pregnancy BMI and trimester.
Bra Size Calculator
Calculate your correct bra size from bust and underbust measurements.
Sleep Cycle Calculator
Calculate ideal bedtime and wake time based on 90-minute sleep cycles.
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About Our Free Health & Fitness Tools
Our free health & fitnesstools are designed to help you solve everyday problems instantly and privately. Every tool runs entirely in your browser — your data is never uploaded to any server. Whether you're a student, professional, or just need a quick calculation, these free health & fitness tools are always available, no sign-up needed.
⚡ Instant & Free
All health & fitness tools run in your browser. No downloads, no installs, no waiting. Completely free forever.
🔒 100% Private
Your data never leaves your device. No account required, no tracking of your inputs.
📱 Works Everywhere
Fully optimized for mobile, tablet, and desktop. Use any health & fitness tool on any device.
🔍 53+ Tools
Browse 53 free health & fitness tools covering everything you need. More added regularly.
Frequently Asked Questions
Are these Health & Fitness tools really free?+
Yes — every health & fitness tool on bodhins.com is completely free. No sign-up, no subscription, no hidden fees. Just open the tool and use it.
Do I need to create an account to use Health & Fitness tools?+
No account is required. All 53 health & fitness tools are available instantly in your browser.
Are the results from these Health & Fitness tools accurate?+
Yes. Our health & fitness tools use proven formulas and algorithms. Results update in real-time as you type.