Professional body composition analysis tools for weight management, health assessment, and wellness tracking.
Calculate exact age in years, months, and days with life expectancy estimates based on health factors.
Body Mass Index calculation with WHO classification and personalized health recommendations.
Body fat percentage estimation using skinfold measurements and circumference methods.
Calculate healthy weight ranges based on height, age, gender, and body frame size.
Calculate total body water percentage for hydration assessment and health monitoring.
Calculate muscle mass and lean tissue percentage for fitness tracking and nutritional planning.
Determine your somatotype (ectomorph, mesomorph, endomorph) for customized fitness planning.
Calculate your metabolic age based on BMR comparison with age-matched populations.
Adult height prediction based on parental heights and growth patterns for children.
Determine if you're overweight according to medical standards with risk assessment.
Body Surface Area calculation for medical dosing and physiological measurements.
Calculate blood oxygen saturation levels and interpret SpO2 readings.
Accurate bra size measurement based on underbust and bust measurements.
Combined BMI and BMR analysis for comprehensive metabolic assessment.
Interpret blood pressure readings with AHA classification and risk assessment.
Comprehensive fitness tools for workout planning, strength training, and exercise optimization.
Calculate calories burned during various exercises and daily activities.
Calculate your one-repetition maximum for strength training and program design.
Create customized workout plans based on fitness goals and available equipment.
Calculate exercise intensity zones for optimal cardiovascular training.
Calculate running pace per mile/kilometer for race planning and training.
Basal Metabolic Rate calculation using Mifflin-St Jeor or Harris-Benedict equations.
Combined BMR and TDEE calculation for comprehensive calorie needs assessment.
Total Daily Energy Expenditure calculation for weight management planning.
Assess immune system function based on lifestyle factors and health markers.
Calculate realistic weight loss timelines and calorie deficits for goal achievement.
Comprehensive tools for pregnancy tracking, fetal development, and pediatric growth monitoring.
Calculate pregnancy due date using LMP, conception date, or ultrasound measurements.
Comprehensive pregnancy tracker with week-by-week development information.
Calculate ovulation dates and fertile window for conception planning.
Determine conception date based on due date or ultrasound measurements.
Calculate recommended weight gain during pregnancy based on pre-pregnancy BMI.
Track infant growth percentiles using WHO growth charts for age and gender.
Real-time infant growth tracking with developmental milestone predictions.
Calculate changing bra sizes during pregnancy and postpartum periods.
Comprehensive nutritional analysis tools for diet planning, macro tracking, and healthy eating.
Calculate daily macronutrient needs (protein, carbs, fat) based on fitness goals.
Calculate optimal protein intake for muscle building, maintenance, or weight loss.
Calculate healthy fat intake ranges for optimal hormone function and health.
Calculate ideal macronutrient ratios for different diet types (keto, balanced, high-protein).
Calculate daily water needs based on weight, activity level, and climate.
Track daily water intake with customizable reminders for optimal hydration.
Calculate net calorie absorption based on food type, preparation, and digestive health.
Calculate WW points for foods based on latest Weight Watchers program guidelines.
Calculate Dietary Reference Intakes for vitamins and minerals based on age and gender.
Calculate vitamin needs and identify potential deficiencies based on diet analysis.
Comprehensive nutritional analysis tool for meal planning and diet optimization.
Assess caffeine consumption and potential dependency with health recommendations.
Evidence-based medical risk assessment tools for preventive healthcare and early detection.
10-year cardiovascular risk assessment using Framingham Heart Study algorithm.
Assess risk for type 2 diabetes based on lifestyle factors and family history.
Assess bone fracture risk using FRAX algorithm for osteoporosis prevention.
Glomerular Filtration Rate calculation for kidney function assessment.
Assess genetic predisposition to common hereditary conditions.
Analyze potential health risks based on genetic markers and family history.
Calculate Blood Alcohol Content based on drinks, weight, gender, and time.
Tools for mental wellness assessment, sleep optimization, and psychological health monitoring.
Calculate optimal wake times based on sleep cycles for refreshed awakening.
Assess sleep quality based on duration, interruptions, and morning alertness.
Screening tool for common mental health conditions with resource recommendations.
PHQ-9 and GAD-7 based screening for depression and anxiety symptoms.
Check interactions between natural supplements, medications, and herbs.
All health computations occur locally in your browser. Your medical information never transmits to servers - no data storage, complete confidentiality.
Utilizing 2026 WHO guidelines, CDC growth charts, AHA cardiovascular algorithms, and evidence-based medical formulas for clinical-caliber accuracy.
View exact BMI formulas, BMR calculations, and risk assessment algorithms - no obscured mathematics. Every formula is documented.
Export growth charts to PDF, download nutritional analysis summaries, share fitness progress with healthcare providers.
15 Analysis Tools
Complete body metric toolkit from BMI to body fat analysis.
10 Training Tools
Comprehensive fitness planning and exercise optimization solutions.
8 Tracking Tools
Pregnancy tracking and pediatric growth monitoring tools.
12 Planning Tools
Nutritional analysis and diet planning calculators.
7 Screening Tools
Evidence-based medical risk screening and assessment.
5 Wellness Tools
Mental wellness assessment and sleep optimization calculators.
Browse through 57 specialized health calculators organized into 6 clear categories. Use the category tabs to quickly navigate to the tool you need.
Input your health information. All calculations happen locally in your browser - your medical data never leaves your device or gets stored on our servers.
Receive accurate calculations instantly. View complete breakdowns, formulas used, and detailed explanations of how results were computed.
Export your results to PDF or CSV format. Save calculations for future reference or share with healthcare providers for professional consultation.
Healthy Weight Management
Scenario: 35-year-old female, 5'6" (168 cm), 160 lbs (72.6 kg)
BMI Calculation: 25.8 (Overweight category)
Healthy Range: 118-148 lbs (53.5-67.1 kg)
Recommendations: 12-27 lbs (5.4-12.2 kg) weight loss for optimal health
Based on WHO BMI classification system
Weight Loss Nutrition
Scenario: 30-year-old male, 180 lbs, moderate activity, weight loss goal
TDEE: 2,650 calories/day
Weight Loss Calories: 2,150/day (500 deficit)
Macro Split: 40% protein (215g), 35% carbs (188g), 25% fat (60g)
Result: 1 lb/week weight loss while preserving muscle mass
Preventive Cardiology
Scenario: 55-year-old male, non-smoker, cholesterol 220, HDL 45, BP 135/85
Framingham Risk Score: 12% 10-year risk
Category: Intermediate risk
Recommendations: Lifestyle modifications, annual monitoring, consider statin therapy
With Improvement: Reducing cholesterol to 180 decreases risk to 8%
All calculations happen locally in your browser. Your health data never leaves your device - no data storage, complete privacy protection.
Using 2026 WHO guidelines, CDC growth charts, AHA cardiovascular algorithms, and validated medical formulas for clinical-grade precision.
View exact BMI formulas, BMR calculations, and risk assessment algorithms - no hidden mathematics. Every formula is fully documented.
Export growth charts to PDF, download nutritional analysis summaries, share fitness progress with healthcare providers.
Discover answers to frequently searched questions about accessing and using QuantumCalcs health tools across different platforms.
57+ Free Mobile Tools
Access 57+ professional health calculators completely free online at QuantumCalcs. No registration required, no hidden fees. Use tools like our BMI Calculator, Body Fat Calculator, and Pregnancy Due Date Calculator directly in your browser.
Access All 57 Free CalculatorsMobile Optimized
QuantumCalcs is fully optimized for mobile devices. Access our Calories Burned Calculator, Workout Planner, and Target Heart Rate Calculator on any smartphone or tablet. Our responsive design works perfectly on iOS and Android without needing to download an app.
Try Fitness CalculatorsNo Download Required
No downloads needed! QuantumCalcs BMI calculator works directly in your browser. Get accurate BMI calculations with WHO classification and personalized recommendations without installing any software. Track changes over time with our history feature.
Use BMI CalculatorGame Health Tools
While we focus on real health calculators, our tools help gamers track fitness and health. Use our Calories Burned Calculator for gaming sessions, Posture Reminder, and Eye Strain Calculator for healthy gaming habits.
Gaming Health ToolsRoleplaying & Real Health
Combine gaming with real health tracking! While playing D&D, use our Posture Check Reminders, Hydration Tracker, and Snack Nutrition Calculator for healthy gaming marathons.
Healthy Gaming ToolsComprehensive Tools
Complete weight management toolkit including Ideal Weight Calculator, Weight Loss Timeline, BMI Analysis, and Body Composition Tracking. All tools use medical standards for accuracy.
Weight Management ToolsComplete Health Assessment
Our comprehensive health assessment combines multiple tools: BMI + Body Fat + Heart Risk + Nutrition Analysis. Get a complete health profile with personalized recommendations for improvement.
Complete Health AssessmentCardiac Assessment
Left Atrial Volume Index calculator for cardiac assessment. While we don't have a dedicated LAVI calculator, use our comprehensive Heart Disease Risk Calculator with Framingham algorithm for cardiovascular health assessment.
Cardiac Risk AssessmentWhich BMR formula is better for 2026 fitness tracking? Our tools compare both algorithms and explain when to use each for maximum accuracy in metabolic assessment.
Calculating grams per pound for body recomposition. Our protein calculator accounts for activity level, age, and fitness goals to determine ideal intake for muscle building or fat loss.
Electrolyte balance and water needs during heat waves. Our hydration tracker calculates needs based on temperature, humidity, and activity intensity for optimal performance.
Calculating healthy ranges based on frame size and height. Our calculator uses multiple methods (Devine, Robinson, Miller) for the most accurate personalized range.
Our BMI calculators use the standard medical formula: weight(kg) / height(m)². This ensures our results match those used by healthcare providers worldwide, with WHO category classifications (underweight, normal, overweight, obese). For fitness tracking, we integrate body fat estimation and waist-to-height ratio for more comprehensive assessment.
Our pregnancy tools are updated for 2026 medical guidelines, including:
We use the Jackson-Pollock 3-site skinfold formula and US Navy circumference method. While not as precise as DEXA, these are validated methods used in clinical settings:
Yes, our tools are perfect for monitoring fitness progress over time. You can track body composition changes, calorie expenditure improvements, strength gains, and cardiovascular fitness metrics. The consistent algorithms ensure you're comparing apples-to-apples when measuring progress week-to-week or month-to-month.
We use the Mifflin-St Jeor equation (most accurate for modern populations) multiplied by activity factors:
No. Privacy is a core value at QuantumCalcs. All calculations are performed locally in your browser. We do not store, track, or sell your weight, height, medical history, or inputs. No account registration is required to use any of our 57+ health tools. Your health information remains entirely on your device.
Our risk calculators use validated algorithms from major medical studies:
Yes, all 57 health calculators are completely free forever. Unlike some sites that limit features behind paywalls or require registration, QuantumCalcs offers full functionality at no cost. We're committed to providing free health tools with complete transparency and no hidden fees. Professional health advice should be obtained for medical decisions.
The calculations provided by QuantumCalcs are for educational and informational purposes only. They are not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.