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The Toolkit for Your Longevity

Centralize your metrics. A complete collection of validated calculators and tests to quantify your health.

Discover our best tools

Life Expectancy

Your Chronological age doesn’t tell the whole story. Discover if your body is aging faster or slower than your ID card suggests with this  algorithm based on 9 bloodmarkers.

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Maintenance Calorie Calculator

Find out your daily calories.

Height Calculator

Understand your growth trajectory with our height calculator.

Body Fat Calculator

Assess your body composition accurately with our scientific body fat tool.
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Health & Medical
Body & Fitness
Calories & Nutrition
Height & Growth
Pregnancy & Child
Conversions & Units

Health & Medical

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ABCP Calculator

ABCP Calculator Estimate your body fat percentage according to Army...

Adjusted Body Weight Calculator

The Adjusted Body Weight Calculator estimates a clinically relevant weight...

AFT Calculator

AFT Calculator Estimate your Advanced Fitness Threshold to better understand...

ALT AST Ratio Calculator

The ALT/AST Ratio Calculator divides your ALT (alanine aminotransferase) by...

ANC Calculator

The ANC Calculator computes your Absolute Neutrophil Count from a...

ANC Neutrophil Calculator

ANC Neutrophil Calculator Calculate your Absolute Neutrophil Count (ANC) to...

Biological Age Calculator

The Biological Age Calculator estimates how old your body really...

Blood Groups Punnett Square

The Blood Groups Punnett Square Calculator predicts the possible blood...

Body & Fitness

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APFT Body Fat Calculator

APFT Body Fat Calculator Estimate your body fat percentage accurately...

Army APFT BMI Calculator

The Army APFT BMI Calculator estimates your Body Mass Index...

Army APFT Body Fat Calculator

Army APFT Body Fat Calculator Estimate your Army body fat...

Army Body Fat Calculator

Army Body Fat Calculator Estimate your body fat percentage using...

Army Body Fat Percentage Calculator

Army Body Fat Percentage Calculator Calculate your body fat percentage...

Army Calculate Body Fat Percentage

Army Calculate Body Fat Percentage Estimate your body fat percentage...

Army Fitness Calculator Body Fat

Army Fitness Calculator Body Fat Estimate your body fat percentage...

Army PT Body Fat Calculator

Army PT Body Fat Calculator Assess your body composition accurately...

Stay Informed

Every week, receive a deep dive into a new tool, our latest longevity protocols.

    Calories & Nutrition

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    BMR Harris-Benedict Equation

    BMR Harris-Benedict Equation Calculate your basal metabolic rate using the...

    Calorie Deficit Calculator

    The Calorie Deficit Calculator determines how many fewer calories you...

    Calorie Deficit for Weight Loss

    Calorie Deficit for Weight Loss Use our calorie deficit for...

    Carb Calculator

    The Carb Calculator estimates your optimal daily carbohydrate intake in...

    How to Calculate Maintenance Calories Accurately

    How to Calculate Maintenance Calories A practical guide to estimating...

    Maintenance calorie calculator

    The Maintenance Calorie Calculator estimates the number of calories you...

    Maintenance Calories

    Maintenance Calories Understand how to calculate maintenance calories to maintain...

    Maintenance Calories Calculator

    Maintenance Calories Calculator Estimate your daily calorie needs to maintain...

    Height & Growth

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    Future Height Calculator

    Future Height Calculator Estimate a child’s predicted adult height using...

    Height calculator

    The Height Calculator predicts a child's adult height using the...

    Height Estimator

    Height Estimator Estimate predicted adult height using evidence-based growth formulas....

    How tall

    How Tall Calculator Easily estimate your height and understand the...

    How Tall Will I Be

    How Tall Will I Be Predict your future height using...

    Predictive Height Calculator

    Predictive Height Calculator Estimate your child’s future height using scientific...

    Biological Age Calculator

    Understanding your biological age can reveal far more about your health than your chronological age.

    Try it now

    Pregnancy & Child

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    Baby Weight Percentile Calculator

    The Baby Weight Percentile Calculator plots your infant's weight on...

    Conception Date Calculator Based on Birthday

    The Conception Date Calculator estimates the likely date of conception...

    Figure Out Due Date by Conception Date

    Figure Out Due Date by Conception Date Calculate your estimated...

    Longevity Glossary

    Biohacking has its own language. A simplified glossary to help you understand the science of human optimization.

    View glossary
    Anatomy & Physiologie
    Biomarkers & Lab Tests
    Diseases & Medical Conditions
    Hormones & Molecules
    Medical Specialties & Healthcare
    Medical Tests & Procedures
    Symptoms & Clinical Signs
    Treatments, Drugs & Therapies

    Conversions & Units

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    mg to IU Converter

    The mg to IU Converter translates milligrams to International Units...

    mmol to mg/dL Calculator

    mmol to mg/dL Calculator Convert blood glucose values between mmol/L...

    mmol/L to mg/dL Converter

    The mmol/L to mg/dL Converter instantly translates blood test values...

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    Carra Sutherland: Redefining luxury through vitality and conscious longevity
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    Body & Fitness (37 tools)

    ⚒APFT Body Fat CalculatorCalculate your body fat for Army Physical Fitness Test standards. Uses the official circumference-based tape...⚒Army APFT BMI CalculatorCalculate your BMI and body fat for Army APFT standards. Check if you meet military...⚒Army APFT Body Fat CalculatorCalculate your body fat percentage using the official Army APFT tape test formula. Check if...⚒Army Body Fat CalculatorCalculate your body fat using the official Army tape test formula. Check your compliance with...⚒Army Body Fat Percentage CalculatorEstimate your body fat percentage using official military standards. Check if you meet Army body...⚒Army Calculate Body Fat PercentageCalculate your army body fat percentage using the official tape test method. Verify compliance with...⚒Army Fitness Calculator Body FatEstimate your military body fat percentage using official Army fitness standards. Quick and accurate tape...⚒Army PT Body Fat CalculatorCalculate body fat for Army PT standards using the official tape test method. Track your...⚒BMI Calculator FemaleCalculate your BMI as a woman with age-adjusted interpretation. Understand what your body mass index...⚒BMI Calculator for Child and TeenCalculate BMI for children and teens aged 2-19 with CDC growth charts. Track healthy development...⚒BMI Calculator for FemaleAccurate BMI calculator designed for women. Understand your body mass index and what it means...⚒Bmi calculator for menFree BMI calculator for men and guys. Enter height and weight to get your BMI...⚒BMI Explained: How to Calculate, Interpret & Go Beyond Body Mass IndexComplete BMI guide: formula, WHO categories, age/sex adjustments, limitations, TOFI problem, better alternatives (WHR, DEXA,...⚒Body Fat CalculatorAccurately assess your body composition with our body fat calculator. Get results using Navy, BMI...⚒Body Fat Percent CalculatorEstimate your body fat percent accurately with multiple formulas. Track your progress and optimize your...⚒Body Fat Percentage CalculatorCalculate your body fat percentage accurately. Compare your results to healthy ranges by age and...⚒Body Fat Percentage CalculatorEstimate your body fat percentage using multiple validated methods. Understand your body composition for better...⚒Body Type CalculatorFind your body type in seconds. Free calculator to identify if you are ectomorph, mesomorph...⚒FFMI CalculatorCalculate your Fat-Free Mass Index to evaluate your muscle development relative to your height. Compare...⚒Height to Waist Ratio CalculatorCheck your height-to-waist ratio to evaluate central obesity and related health risks. A simple, evidence-based...⚒Hip to Waist Ratio CalculatorCalculate your hip-to-waist ratio to assess body fat distribution and understand your risk for heart...⚒How to Calculate Body FatLearn the best methods to calculate your body fat percentage at home. Accurate tools and...⚒How to Work Out Fat PercentageLearn how to work out your fat percentage with our step-by-step calculator and body composition...⚒Ideal Body Weight CalculatorEstimate your ideal body weight using clinically validated formulas based on your height, gender and...⚒Lean Body Mass CalculatorEstimate your lean body mass to better plan your nutrition and training. Uses the Boer,...⚒Lean Body Mass CalculatorCalculate your lean body mass to understand your muscle-to-fat ratio. Essential for setting nutrition and...⚒Navy Body Fat CalculatorCalculate your body fat percentage using the official US Navy method. Get instant results with...⚒Navy Body Fat CalculatorCalculate your body fat percentage using the official U.S. Navy circumference method. Quick, accurate and...⚒The Complete Guide to Body Fat (2024)The complete guide to body fat percentage. Learn healthy ranges by age and gender, how...⚒Waist Hip Circumference Ratio CalculatorCalculate your waist-to-hip circumference ratio to assess body fat distribution and related health risks.⚒Waist Hip Ratio CalculatorMeasure your waist-to-hip ratio to assess cardiovascular risk and fat distribution. Fast, free and based...⚒Waist to Hip CalculatorMeasure your waist-to-hip ratio to assess fat distribution and evaluate your cardiovascular and metabolic health...⚒Waist to Hip Ratio CalculatorAssess your body fat distribution and health risk with this waist-to-hip ratio tool based on...⚒Waist to Hip Ratio CalculatorCalculate your waist-to-hip ratio to evaluate health risks related to abdominal fat. Based on WHO...⚒Waist-to-Height Ratio CalculatorAssess your health risk using the waist-to-height ratio. A better predictor of cardiometabolic risk than...⚒What Is My Body Fat Percentage?Find out your body fat percentage with our accurate calculator. Get personalized insights on your...⚒Women BMI CalculatorCalculate your BMI with female-specific health ranges. Get insights on weight, nutrition and wellness tailored...
    View all Body & Fitness (37 tools) →

    Calories & Nutrition (18 tools)

    ⚒BMR Harris-Benedict EquationCalculate your Basal Metabolic Rate using the Harris-Benedict equation. Understand your baseline calorie burn at...⚒Calorie Deficit CalculatorCalculate your exact calorie deficit for weight loss. Free calculator using Mifflin-St Jeor TDEE and...⚒Calorie Deficit for Weight LossCalculate the exact calorie deficit you need for safe, sustainable weight loss. Get a personalized...⚒Carb CalculatorCalculate your optimal daily carbohydrate intake based on your goals, activity level and metabolic health...⚒How to Calculate Maintenance Calories AccuratelyLearn how to calculate your maintenance calories accurately with multiple validated formulas and practical guidance.⚒Maintenance calorie calculatorUse our maintenance calorie calculator to estimate your daily calorie needs and maintain your weight...⚒Maintenance CaloriesUnderstand and calculate your maintenance calories with our comprehensive guide. Optimize your daily energy intake.⚒Maintenance Calories CalculatorEstimate your daily maintenance calories accurately using Mifflin-St Jeor and Harris-Benedict equations. Free and instant.⚒Maintenance Calories CalculatorEstimate your daily calorie needs to maintain your current weight. Based on your metabolism, activity...⚒Maintenance Calories: How to Calculate, Adjust & Use Your TDEELearn how to calculate maintenance calories using Mifflin-St Jeor, Harris-Benedict and Katch-McArdle formulas. TDEE components,...⚒Maintenance Kcal CalculatorCalculate your maintenance kilocalories to maintain your current weight. Personalized results based on your body...⚒Net Carb CalculatorCalculate net carbs for keto and low-carb diets. Subtract fiber and sugar alcohols to track...⚒Pregnancy Weight Gain CalculatorTrack healthy weight gain during pregnancy. Get week-by-week guidance based on IOM recommendations and your...⚒RMR CalculatorEstimate your Resting Metabolic Rate to understand how many calories your body burns at rest....⚒Weight Gain CalculatorPlan healthy weight gain with a personalized calorie surplus calculator. Track your progress toward your...⚒Weight Gain EstimatorPredict healthy weight gain over time based on your calorie surplus, metabolism and activity level....⚒Weight Gain While Pregnant CalculatorTrack healthy weight gain during pregnancy week by week. Based on IOM guidelines for your...⚒What Is My Maintenance CaloriesFind out how many calories you need daily to maintain your weight. Uses Harris-Benedict and...
    View all Calories & Nutrition (18 tools) →

    Health & Medical (38 tools)

    ⚒ABCP CalculatorCalculate your body fat under the Army Body Composition Program. Check your compliance with ABCP...⚒Adjusted Body Weight CalculatorCalculate adjusted body weight for clinical dosing and nutrition assessment in obese patients. Uses the...⚒AFT CalculatorCalculate your Advanced Fitness Threshold to evaluate cardiorespiratory endurance and set evidence-based training targets.⚒ALT AST Ratio CalculatorCalculate your ALT-to-AST ratio to assess liver function. Helps differentiate causes of liver enzyme elevation.⚒ANC CalculatorCalculate your Absolute Neutrophil Count from a complete blood count. Evaluate immune status and infection...⚒ANC Neutrophil CalculatorCalculate your Absolute Neutrophil Count from CBC results. Assess immune function and neutropenia risk instantly.⚒Biological Age CalculatorEstimate your biological age using blood biomarkers and lifestyle data. Discover if your body is...⚒Blood Groups Punnett SquarePredict blood type inheritance using a Punnett Square. Find the probability of your child's ABO...⚒Body area surface calculatorCalculate your body surface area (BSA) for medication dosing and metabolic assessments. Multiple validated formulas...⚒Body Surface Area (BSA) CalculatorCalculate your body surface area for accurate medication dosing and clinical assessments. Uses DuBois, Mosteller...⚒BP MAP CalculatorCalculate Mean Arterial Pressure from your blood pressure reading. Assess cardiovascular health and organ perfusion...⚒Calcul DoseCalculez facilement votre dose médicale. Calculateur gratuit de dosage par poids corporel, surface corporelle et...⚒Calculate CaffeineCalculate your daily caffeine intake and understand its effects on your sleep, energy and overall...⚒Calculate Weight Loss in PercentageCalculate your weight loss as a percentage to track progress accurately. A better metric than...⚒Cholesterol HDL Ratio CalculatorCalculate your cholesterol-to-HDL ratio to assess cardiovascular risk. Understand what your numbers mean for heart...⚒Fat CalculatorCalculate your daily fat intake needs based on your diet goals, activity level and caloric...⚒Harris and Benedict CalculatorUse our Harris-Benedict calculator to compute your BMR and TDEE. Enter age, weight, height and...⚒Harris Benedict EquationCalculate your BMR with the Harris-Benedict equation. Estimate your total daily energy needs for nutrition...⚒Harris Benedict Formula CalculatorCalculate your BMR using the Harris-Benedict formula. Estimate your total daily energy expenditure for diet...⚒Harris Equation CalculatorCalculate your Basal Metabolic Rate using the Harris equation. Understand your daily energy expenditure at...⚒Implantation CalculatorPredict your implantation window and earliest pregnancy test date based on ovulation or IVF transfer...⚒IQ Percentile CalculatorConvert your IQ score to a percentile ranking. Understand where you stand on the intelligence...⚒Life Expectancy CalculatorEstimate your lifespan based on lifestyle, health markers and evidence-based longevity factors. Personalized and science-driven.⚒Life expectancy in the UKEstimate your life expectancy using official UK ONS data. Compare your cohort and discover how...⚒Map CalculatorCalculate your Mean Arterial Pressure from systolic and diastolic blood pressure. A key indicator of...⚒Mean Arterial Pressure CalculatorCalculate your Mean Arterial Pressure (MAP) from systolic and diastolic values. Assess organ perfusion and...⚒Mentzer Index CalculatorCalculate the Mentzer Index from your CBC results. Differentiate between iron deficiency anemia and thalassemia...⚒Navy PRT CalculatorCalculate your Navy Physical Readiness Test score. Evaluate your push-ups, curl-ups and run time against...⚒Navy PRT Guide: Standards, Calculator & TipsComplete guide to the Navy Physical Readiness Test. Standards by age and gender, scoring, tips...⚒Navy PRT StandardsCheck the latest Navy Physical Readiness Test standards by age and gender. Understand scoring for...⚒Peptide Dosage CalculatorCalculate precise peptide dosages for reconstitution and administration. Reliable tool for health and longevity protocols.⚒Peptide Dosing CalculatorCalculate precise peptide dosing for reconstitution and injection. Get reliable guidance for your longevity protocols.⚒Resting Metabolic Rate CalculatorCalculate your resting metabolic rate to understand your baseline calorie burn. Essential for effective diet...⚒Surface Area Body CalculatorEstimate your body surface area for drug dosing, burn assessment and metabolic calculations. Accurate and...⚒Weight Loss Percentage CalculatorTrack your weight loss progress as a percentage. A more meaningful way to measure results...⚒Weight Watchers Points CalculatorCalculate your Weight Watchers SmartPoints for any food. Track your daily points budget and make...⚒Weight Weight CalculatorCalculate your ideal and healthy body weight based on height, frame size and gender. Compare...⚒What Is Longevity? The Science of Living Longer and HealthierComplete guide to longevity: definition, biology of aging, 12 hallmarks, Blue Zones, biomarkers, 5 pillars...
    View all Health & Medical (38 tools) →

    Height & Growth (6 tools)

    ⚒Future Height CalculatorPredict a child's adult height based on parental height and growth data. Uses the Khamis-Roche...⚒Height calculatorPredict your adult height based on age, gender and parental height. Accurate, simple and science-based...⚒Height EstimatorEstimate your predicted adult height using scientific growth models. Based on parental height, age and...⚒How tallFind out how tall you or your child will be. Science-based height prediction using growth...⚒How Tall Will I BePredict your future adult height with our evidence-based calculator. Uses parental height and growth science...⚒Predictive Height CalculatorEstimate a child's future adult height using validated pediatric growth prediction models and parental measurements.
    View all Height & Growth (6 tools) →

    Pregnancy & Child (3 tools)

    ⚒Baby Weight Percentile CalculatorTrack your baby's weight against WHO and CDC growth percentile charts. Monitor healthy infant development...⚒Conception Date Calculator Based on BirthdayEstimate your conception date based on your birthday or due date. Understand when fertilization likely...⚒Figure Out Due Date by Conception DateFigure out your pregnancy due date from your conception date. Get an estimated delivery date...
    View all Pregnancy & Child (3 tools) →

    Conversions & Units (3 tools)

    ⚒mg to IU ConverterConvert milligrams to International Units for vitamins and supplements. Accurate conversion factors for Vitamin D,...⚒mmol to mg/dL CalculatorConvert blood glucose and cholesterol values between mmol/L and mg/dL instantly. Accurate medical unit conversion...⚒mmol/L to mg/dL ConverterConvert blood test values between mmol/L and mg/dL for glucose, cholesterol and more. Fast, accurate...
    View all Conversions & Units (3 tools) →