Health calculators

Body measurements calculators

22 calculators

• ABSI Calculator (A Body Shape Index)
• Adjusted Body Weight Calculator
• Body Adiposity Index Calculator (BAI)
• Body Fat Calculator (US Navy, BMI and ADA methods)
• Body Frame Size Calculator
• Body Roundness Index Calculator (BRI)
• Body Shape Calculator
• Body Surface Area Calculator (BSA)
• Draw Length Calculator (Archery)
• Face Shape Calculator
• FFMI Calculator (Fat-Free Mass Index)
• Height and Weight Estimation for Bedridden Patients
• Ideal Weight Calculator
• Karvonen Formula Calculator (Target Heart Rate)
• Lean Body Mass Calculator
• Overweight Calculator (BMI and Ponderal Index)
• Ponderal Index Calculator (Rohrer’s Index)
• RFM Calculator (Relative Fat Mass)
• Skinfold Body Fat Calculator (Durnin–Womersley)
• Waist to Height Ratio Calculator (WHtR)
• Waist to Hip Ratio Calculator (WHR)
• Weight Loss Percentage Calculator

BMI calculators

9 calculators

• BMI Calculator (Body Mass Index)
• BMI Calculator for Kids (Ages 2–9)
• BMI Calculator for Men
• BMI Calculator for Teens (Ages 10–20)
• BMI Calculator for Women
• BMI Prime Calculator
• BMI Weight Loss Calculator
• Geriatric BMI Calculator (Over 65)
• Healthy Weight Calculator

Military fitness calculators

3 calculators

• AFT Calculator (Army Fitness Test Score)
• Army Body Fat Calculator (AR 600-9)
• Navy Body Fat Calculator

Dietary calculators

32 calculators

• BEE Calculator (Basal Energy Expenditure)
• BMR Calculator (Basal Metabolic Rate)
• Calorie Calculator
• Calorie Deficit Calculator
• Carb Calculator (Carbohydrate Intake)
• Diet Risk Score Calculator
• DRI Calculator (Dietary Reference Intakes)
• EER Calculator (Estimated Energy Requirement)
• Fat Intake Calculator
• Fiber Calculator (Daily Fiber Intake)
• Gastric Sleeve Weight Loss Calculator
• Harris–Benedict Equation Calculator (BMR)
• IIFYM Calculator (If It Fits Your Macros)
• Katch–McArdle Calculator (BMR from Lean Mass)
• Keto Calculator (Ketogenic Diet Macros)
• Macro Calculator
• Maintenance Calorie Calculator
• Meal Calorie Calculator
• Micronutrient Calculator (Minerals)
• Mifflin–St Jeor Calculator (BMR)
• Net Carbs Calculator
• Protein Calculator (Daily Protein Intake)
• RMR Calculator (Resting Metabolic Rate)
• Simple Calorie Intake Calculator
• Sodium in Salt Calculator
• Sugar Intake Calculator (Added Sugar)
• TDEE Calculator (Total Daily Energy Expenditure)
• Vitamin A Calculator (IU to mcg RAE)
• Vitamin Calculator (Daily Vitamin Requirements)
• Vitamin D Calculator
• Weight Gain Calculator
• Weight Watchers Points Calculator

Diabetes calculators

9 calculators

• Blood Sugar Calculator (mg/dL ↔ mmol/L)
• Diabetes Risk Calculator (San Antonio Heart Study)
• Diabetic Ketoacidosis Calculator (DKA Criteria and Severity)
• Estimated Average Glucose Calculator (A1c to eAG)
• Glycemic Index Calculator
• Glycemic Load Calculator
• Hemoglobin A1c Calculator (Average Glucose to A1c)
• HOMA-IR Calculator (Insulin Resistance)
• QUICKI Calculator (Insulin Sensitivity)

Metabolic disorders calculators

7 calculators

• Cholesterol Ratio Calculator
• Cholesterol Units Converter (mg/dL ↔ mmol/L)
• Gout Diagnosis Calculator (Clinical Rule)
• LDL Calculator (Friedewald and Sampson/NIH)
• Metabolic Syndrome Calculator
• SAAG Calculator (Serum-Ascites Albumin Gradient)
• VLDL Calculator

Sleep calculators

5 calculators

• AHI Calculator (Apnea–Hypopnea Index)
• Pediatric Epworth Sleepiness Scale (ESS-CHAD)
• Sleep Calculator (Bedtime and Wake-Up Time)
• Sleep Debt Calculator
• STOP-BANG Calculator (Sleep Apnea Risk)

Sleep calculators 😴

1 calculator

• Epworth Sleepiness Scale Calculator (ESS)

Cardiovascular system calculators

41 calculators

• 6-Minute Walk Test Calculator
• ABI Calculator (Ankle-Brachial Index)
• Aortic Valve Area Calculator (Continuity Equation)
• Arterial Age Calculator (Heart Age without Blood Tests)
• ASCVD Risk Calculator (Pooled Cohort Equations)
• Blood Pressure Calculator (Category, MAP and Pulse Pressure)
• Cardiac Index Calculator
• Cardiac Output Calculator (HR × SV and Fick)
• Cerebral Perfusion Pressure Calculator (CPP)
• CHA₂DS₂-VASc Calculator (Stroke Risk in Atrial Fibrillation)
• DAPT Score Calculator
• Doppler Echo Cardiac Output Calculator
• Duke Treadmill Score Calculator
• ECG Boxes to Seconds Calculator
• ECG Heart Rate Calculator
• Ejection Fraction Calculator
• EROA Calculator (Effective Regurgitant Orifice Area)
• Framingham Risk Score Calculator (10-Year CVD Risk and Heart Age)
• Gorlin Formula Calculator (Valve Area)
• GRACE Score Calculator (ACS In-Hospital Mortality)
• HAS-BLED Calculator (Bleeding Risk)
• Heart Failure Life Expectancy Calculator (MAGGIC)
• HEART Score Calculator (Chest Pain)
• ICH Volume Calculator (ABC/2)
• LV Mass Index Calculator
• MAP Calculator (Mean Arterial Pressure)
• MICA Calculator (Gupta Perioperative Cardiac Risk)
• Mitral Valve Area Calculator (Pressure Half-Time)
• Padua Prediction Score (VTE Risk in Medical Patients)
• PERC Rule Calculator (Pulmonary Embolism Rule-Out)
• PISA Calculator (Mitral Regurgitation)
• Pulmonary Vascular Resistance Calculator (PVR)
• QTc Calculator (Corrected QT Interval)
• Rate Pressure Product Calculator
• RCRI Calculator (Revised Cardiac Risk Index)
• Revised Geneva Score for Pulmonary Embolism
• Stroke Volume Calculator
• Target Heart Rate Calculator
• TIMI Risk Score for STEMI
• TIMI Risk Score for UA/NSTEMI
• Wells Score for Pulmonary Embolism

Gynecology and pregnancy calculators

31 calculators

• Basal Body Temperature Calculator (BBT Ovulation Chart)
• Birth Control Cost Calculator
• Bishop Score Calculator (Cervical Readiness)
• Breast Pump Flange Size Calculator
• Breastfeeding Calorie Calculator
• Clomid Ovulation Calculator
• Conception Date Calculator
• Crown-Rump Length Calculator (CRL)
• Due Date Calculator (Pregnancy Due Date)
• Fertility by Age Calculator
• Fundal Height Calculator
• Gestational Age Calculator
• hCG Levels Calculator (Doubling Time)
• Implantation Calculator
• IVF Due Date Calculator
• Luteal Phase Calculator
• MCA Doppler Calculator (Fetal Anaemia, MCA-PSV MoM)
• Mean Sac Diameter Calculator (MSD)
• Nuchal Translucency Calculator
• Ovulation Calculator (Fertile Window)
• Pearl Index Calculator (Contraceptive Effectiveness)
• Period Calculator (Next Period Dates)
• Pregnancy Calculator (Week-by-Week Timeline)
• Pregnancy Test Calculator (When to Test)
• Pregnancy Weight Gain Calculator
• Progesterone to Estradiol Ratio Calculator (P/E2)
• Reverse Due Date Calculator (Due Date to Conception)
• Semen Analysis Calculator (WHO 2021)
• Testosterone to Estradiol Ratio Calculator (T/E2)
• VBAC Calculator (Vaginal Birth After Caesarean)
• VTE Risk in Pregnancy Calculator (RCOG Score)

Addiction medicine calculators

16 calculators

• Alcohol Units Calculator (UK Units)
• AUDIT Test Calculator (Alcohol Use Disorders)
• AUDIT-C Calculator (Alcohol Screening)
• BAC Calculator (Blood Alcohol Content)
• Caffeine Calculator (Daily Intake and Half-Life)
• CAGE Questionnaire Calculator
• Cigarette Calculator (Cigarettes Smoked and Life Lost)
• CIWA-Ar Calculator (Alcohol Withdrawal)
• DUDIT Calculator (Drug Use Disorders Identification Test)
• Fagerström Test for Nicotine Dependence
• Finnegan Score Calculator (Neonatal Abstinence Syndrome)
• Heaviness of Smoking Index Calculator (HSI)
• Pack Year Calculator
• Smoking Recovery Timeline Calculator
• Sobriety Calculator (Days Sober)
• Standard Drink Calculator

Urology and nephrology calculators

20 calculators

• Adrenal Washout Calculator (CT)
• Albumin to Creatinine Ratio Calculator (ACR)
• Bladder Volume Calculator (Ultrasound)
• BUN to Creatinine Ratio Calculator
• Creatinine Clearance Calculator (Cockcroft–Gault)
• eGFR Calculator (CKD-EPI 2021, MDRD and Cockcroft–Gault)
• EORTC Bladder Cancer Recurrence and Progression Score
• FENa Calculator (Fractional Excretion of Sodium)
• FEUrea Calculator (Fractional Excretion of Urea)
• Glomerular Filtration Rate Calculator (Creatinine and Cystatin C)
• Kidney Failure Risk Calculator (KFRE)
• Kidney Stone Passage Calculator
• Kt/V Calculator (Dialysis Adequacy)
• Prostate Volume Calculator
• PSA Density Calculator
• PSA Doubling Time Calculator
• TTKG Calculator (Transtubular Potassium Gradient)
• Urine Output Calculator (mL/kg/h)
• Urine Protein to Creatinine Ratio Calculator (UPCR)
• URR Calculator (Urea Reduction Ratio)

Electrolytes and fluids calculators

22 calculators

• Acid–Base Calculator (ABG Interpretation)
• Anion Gap Calculator (with Albumin Correction)
• Bicarbonate Deficit Calculator
• Blood pH Calculator (Henderson–Hasselbalch)
• Corrected Calcium Calculator (Albumin-Adjusted)
• Corrected Magnesium Calculator
• Corrected Sodium Calculator (Hyperglycaemia)
• Drip Rate Calculator (Dose to Infusion Rate)
• Drops per Minute Calculator (IV Drip Rate)
• Free Water Deficit Calculator
• IV Flow Rate Calculator (mL/h and Drops per Minute)
• Parkland Formula Calculator (Burns Fluid)
• Plasma Osmolality Calculator
• Serum Osmolality and Osmolal Gap Calculator
• Sodium Change Calculator (Adrogué–Madias)
• Sodium Correction Rate Calculator (Infusion Rate)
• Sodium Deficit Calculator
• Total Body Water Calculator (Watson Formula)
• Urine Anion Gap Calculator
• VBG to ABG Calculator (Venous to Arterial Blood Gas)
• Water Intake Calculator (How Much Water to Drink)
• Winters’ Formula Calculator (Expected PaCO₂)

Hematology calculators

27 calculators

• 4Ts Score Calculator (Heparin-Induced Thrombocytopenia)
• Absolute Eosinophil Count Calculator
• Absolute Lymphocyte Count Calculator
• Absolute Neutrophil Count Calculator (ANC)
• Age-Adjusted D-dimer Calculator
• Albumin to Globulin Ratio Calculator
• Allowable Blood Loss Calculator
• ANC Calculator without Bands
• Blood Donation Eligibility Date Calculator
• Blood Donor Compatibility Calculator
• Blood Type Calculator (Child’s Blood Type from Parents)
• Blood Volume Calculator (Nadler Formula)
• Corrected Reticulocyte Count Calculator
• DIC Score Calculator (ISTH Overt DIC)
• Fresh Frozen Plasma Dose Calculator
• Hematocrit to Hemoglobin Calculator
• INR Calculator (International Normalized Ratio)
• IPI Calculator (DLBCL Prognosis)
• Iron Deficiency Calculator (Ganzoni Formula)
• Mentzer Index Calculator
• MIPI Calculator (Mantle Cell Lymphoma Prognosis)
• mmol/L to mg/dL Converter (Lab Values)
• Neutrophil to Lymphocyte Ratio Calculator (NLR)
• Plasma Volume Calculator
• RBC Indices Calculator (MCV, MCH, MCHC)
• Reticulocyte Count Calculator (Corrected and RPI)
• Transferrin Saturation Calculator (TSAT)

Percentile calculators

8 calculators

• Baby Percentile Calculator (WHO Growth Charts)
• Birth Weight Percentile Calculator
• BMI Percentile Calculator for Children and Teens
• Child Height Percentile Calculator
• Child Weight Percentile Calculator
• Fetal Weight Percentile Calculator (Hadlock)
• Head Circumference Percentile Calculator
• IQ Percentile Calculator

Pediatric calculators

14 calculators

• Adjusted Age Calculator (Corrected Age for Premature Babies)
• Apgar Score Calculator
• Baby Eye Color Calculator
• Baby Formula Calculator (How Much Formula)
• Breast Milk Intake Calculator
• Child Height Predictor (Adult Height Calculator)
• Exclusive Pumping Calculator
• GIR Calculator (Glucose Infusion Rate)
• Maintenance Fluids Calculator (Holliday–Segar 4-2-1)
• PECARN Head Injury Rule Calculator
• Pediatric Blood Pressure Calculator (Screening)
• Pediatric Blood Volume Calculator
• Pediatric eGFR Calculator (Bedside Schwartz)
• Pediatric Transfusion Volume Calculator

Dosage calculators

10 calculators

• Carboplatin Dose Calculator (Calvert Formula)
• Dosage Calculator (mg/kg)
• Drug Half-Life Calculator
• Fish Oil Calculator (EPA and DHA)
• IVIG Dose Calculator
• mcg to IU Converter (Vitamins)
• Medicine Schedule Calculator (Three Times a Day)
• Morphine Milligram Equivalents Calculator (MME)
• Prescription Refill Calculator
• tPA Dose Calculator (Alteplase and Tenecteplase for Stroke)

Pulmonary calculators

19 calculators

• A-a Gradient Calculator (Alveolar–Arterial Oxygen Gradient)
• BODE Index Calculator (COPD Survival)
• CURB-65 Calculator (Pneumonia Severity)
• Dead Space Calculator (Bohr–Enghoff)
• ETT Size Calculator (Endotracheal Tube Size and Depth)
• FEV1/FVC Ratio Calculator (Spirometry)
• Light’s Criteria Calculator (Pleural Effusion)
• Lung Cancer Risk Calculator for Smokers (PLCOm2012)
• Lung Capacity Calculator (Predicted Lung Volumes)
• Lung Nodule Growth Rate Calculator (Volume Doubling Time)
• Mean Airway Pressure Calculator
• Oxygenation Index Calculator (OI and OSI)
• PaO₂/FiO₂ Ratio Calculator (P/F Ratio)
• Peak Flow Calculator (Predicted PEF and Asthma Zones)
• Pneumonia Severity Index Calculator (PSI/PORT)
• Qp/Qs Ratio Calculator (Shunt Fraction)
• RSBI Calculator (Rapid Shallow Breathing Index)
• Tidal Volume Calculator (Predicted Body Weight)
• Vital Capacity Calculator

Psychiatry and psychology calculators

5 calculators

• Edinburgh Postnatal Depression Scale Calculator (EPDS)
• GAD-7 Anxiety Test Calculator
• Happiness Calculator (Subjective Happiness Scale)
• PHQ-9 Depression Test Calculator
• SNAP-IV Calculator (ADHD Rating Scale)

Intensive and emergency care calculators

15 calculators

• Alvarado Score Calculator (Appendicitis)
• APACHE II Score Calculator
• Glasgow Coma Scale Calculator (GCS)
• ICH Score Calculator (Intracerebral Haemorrhage)
• Injury Severity Score Calculator (ISS)
• LRINEC Score Calculator (Necrotising Fasciitis)
• MEWS Calculator (Modified Early Warning Score)
• NEDOCS Calculator (Emergency Department Overcrowding)
• NIH Stroke Scale Calculator (NIHSS)
• qSOFA Calculator (Quick SOFA for Sepsis)
• Revised Trauma Score Calculator (RTS)
• SAPS II Calculator (Simplified Acute Physiology Score)
• Sepsis Calculator (SIRS Criteria and Sepsis Screening)
• Shock Index Calculator
• SOFA Score Calculator (Sequential Organ Failure Assessment)

Digestive system calculators

9 calculators

• APRI Calculator (AST to Platelet Ratio Index)
• AST/ALT Ratio Calculator (De Ritis Ratio)
• Child–Pugh Score Calculator (Cirrhosis Severity)
• Crohn’s Disease Activity Index Calculator (CDAI)
• FIB-4 Calculator (Liver Fibrosis)
• Lille Score Calculator (Response to Steroids in Alcoholic Hepatitis)
• Maddrey Discriminant Function Calculator (Alcoholic Hepatitis)
• MELD Score Calculator (MELD 3.0, MELD-Na and Original MELD)
• NAFLD Fibrosis Score Calculator

Epidemiology calculators

7 calculators

• Hand Sanitizer Calculator (WHO Formulation)
• Herd Immunity Calculator
• Incidence Rate Calculator
• Mortality Rate Calculator (Death Rate and Case Fatality)
• NNT Calculator (Number Needed to Treat)
• SIR Epidemic Model Calculator
• Vaccine Efficacy Calculator

Radiology calculators

4 calculators

• BED and EQD2 Calculator (Radiotherapy)
• Medical Radiation Dose Calculator (X-ray and CT)
• Radiation Dose Converter (Gy, Sv, rad, rem)
• TI-RADS Calculator (ACR Thyroid Nodule Score)

Geriatric medicine calculators

8 calculators

• Barthel Index Calculator (Activities of Daily Living)
• BIMS Calculator (Brief Interview for Mental Status)
• Braden Scale Calculator (Pressure Ulcer Risk)
• Charlson Comorbidity Index Calculator (CCI)
• Frailty Calculator (FRAIL Scale)
• Morse Fall Scale Calculator
• Osteoporosis Risk Calculator (ORAI and OST)
• Tinetti Test Calculator (Balance and Gait)

Other health calculators

15 calculators

• Aldrete Score Calculator (Post-Anaesthesia Recovery)
• BASDAI Calculator (Ankylosing Spondylitis Activity)
• Beighton Score Calculator (Joint Hypermobility)
• Berg Balance Scale Calculator
• Car Heat Calculator (Temperature Inside a Parked Car)
• Centor Score Calculator (Modified McIsaac, Strep Throat)
• DASI Calculator (Duke Activity Status Index)
• Dog Walking Calories Calculator
• EASI Score Calculator (Eczema Area and Severity Index)
• Fatigue Severity Scale Calculator (FSS)
• Free Testosterone Calculator (Vermeulen)
• Noise Exposure Calculator (Safe Listening Time)
• SCORAD Calculator (Atopic Dermatitis)
• Time of Death Calculator (Body Temperature)
• Visual Acuity Converter (20/20 Vision)