Body & Weight
Understand your body composition and weight metrics
BMI Calculator
Calculate your Body Mass Index and find out if you're in a healthy weight range for your height.
BMR Calculator
Find your Basal Metabolic Rate — the calories your body burns at complete rest each day.
Body Fat % Calculator
Estimate your body fat percentage using the accurate US Navy circumference method.
TDEE Calculator
Calculate your Total Daily Energy Expenditure — the total calories you burn including activity.
Ideal Weight Calculator
Find your ideal weight range using four proven clinical formulas based on your height and sex.
Lean Body Mass
Calculate your lean body mass — everything in your body except fat — muscles, bones, water, organs.
Waist-Hip Ratio
Measure your cardiovascular risk by comparing your waist and hip measurements.
Nutrition
Optimize your diet with precision nutrition tools
Macro Calculator
Get your personalized daily protein, carbohydrate, and fat targets based on your goals.
Water Intake Calculator
Calculate exactly how much water you should drink daily based on weight, activity, and climate.
Protein Calculator
Find your optimal daily protein intake based on body weight, fitness goals, and activity level.
Keto Calculator
Calculate your ketogenic diet macros: fat, protein, and carb targets for successful ketosis.
Cardiovascular
Monitor and optimize your heart health
Heart Rate Zones
Calculate your 5 training heart rate zones using the Karvonen method for maximum results.
VO2 Max Estimator
Estimate your maximum oxygen uptake — a key marker of cardiovascular fitness and longevity.
Calorie Burn Calculator
Find out exactly how many calories you burn during 15+ exercises and sports activities.
Blood Pressure Checker
Enter your systolic and diastolic readings to understand your blood pressure classification.
Fitness & Performance
Train smarter and track your athletic progress
1RM Calculator
Calculate your one-rep max for any lift and get a complete percentage training chart.
Steps to Calories
Convert daily steps into calories burned, distance walked, and other useful health metrics.
Running Pace Calculator
Calculate your running pace, speed, finish time, and race predictions for any distance.
Women's Health
Specialized tools for women's health and pregnancy
General Health
Essential tools for everyday health awareness
Sleep Calculator
Find the best times to sleep or wake up to complete full sleep cycles and wake refreshed.
BAC Calculator
Estimate your blood alcohol content based on drinks consumed, weight, sex, and time elapsed.
Biological Age Calculator
Estimate how old your body is biologically compared to your chronological age using lifestyle factors.
Science-based health calculators, free forever.
ASHORA provides accurate, peer-reviewed health calculations designed for everyone — from fitness beginners to healthcare professionals. Every formula we use is based on validated research published in medical and sports science journals.
Unlike other calculator websites, we don't hide results behind paywalls or require you to create an account. All 30+ tools work instantly in your browser — your data never leaves your device.
Important: Our calculators provide estimates for general wellness information only. They are not medical devices and should not replace advice from a qualified healthcare provider. Always consult a doctor before making significant changes to your diet or exercise routine.