Health calculators

295 calculators

Screening tools, body metrics, and calorie math you can trust.

BMI, body fat, BMR, and other health screening tools — clearly labelled as informational rather than diagnostic, with citations for each formula.

Body Metrics calculators

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BMI, body fat, and body composition.

Schwartz Pediatric eGFR Calculator Drug Loading Dose Calculator Drug Maintenance Dose Calculator Time to Steady State Calculator Nadler Blood Volume Calculator Weight-Based Drug Dose Calculator Plasma Drug Elimination Calculator Blood Alcohol Concentration (BAC) Calculator BMI Calculator HEART Score Calculator NIHSS Total Calculator APGAR Score Calculator Glasgow Coma Scale Calculator Wells DVT Score Calculator MELD Score Calculator Centor / McIsaac Score Calculator CHA₂DS₂-VASc Score Calculator ABCD2 Score Calculator Morphine Equivalent (MME) Calculator Corrected Calcium Calculator Corrected Sodium for Hyperglycaemia Calculator eGFR (CKD-EPI 2021) Calculator QTc (Bazett) Calculator Maintenance Fluids (4-2-1 Rule) Calculator Steroid Dose Equivalence Calculator Ideal Body Weight (Devine) Calculator HAS-BLED Score Calculator Body Fat Calculator Cockcroft-Gault Creatinine Clearance Calculator MELD-Na Score Calculator Ideal Weight Calculator Body Fat (Navy) Calculator BMI Prime Calculator PERC Rule Calculator Waist-to-Hip Ratio Calculator Fractional Excretion of Sodium (FENa) Calculator Menstrual Cycle Calculator Parkland Formula Calculator Blood Pressure Classifier Body Surface Area Calculator Child-Pugh Score Calculator Lean Body Mass Calculator Free Water Deficit Calculator Waist Circumference Risk Calculator Pregnancy Trimester Calculator MEWS Score Calculator CURB-65 Score Calculator Wells Pulmonary Embolism Score Calculator qSOFA Score Calculator Waist-to-Height Ratio Calculator Mean Arterial Pressure Calculator GFR (Cockcroft-Gault) Calculator IV Drip Rate Calculator Anion Gap Calculator Pregnancy Weight Gain Calculator Pediatric Weight Calculator

More Health calculators

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Absolute Neutrophil Count (ANC) Calculator A-a Gradient Calculator Serum Osmolality Calculator Predicted Tidal Volume Calculator Cunningham RMR Calculator (Athletes) Fractional Excretion of Urea (FE_urea) Calculator Alvarado Score for Acute Appendicitis Calculator Framingham 10-Year CVD Risk (Simplified) Calculator Canadian C-Spine Rule Clearance Calculator CAGE Alcohol Screening Questionnaire Score Calculator Paediatric Fluid Deficit Calculator Minute Ventilation Calculator Mentzer Index (MCV / RBC) Microcytic Anemia Calculator QTc Fridericia Calculator Caprini DVT Risk Score Calculator Padua VTE Risk Prediction Score Calculator HbA1c to Estimated Average Glucose (eAG) Calculator Charlson Comorbidity Index (CCI) Calculator Orthostatic Hypotension from BP Change Calculator Body Surface Area by Mosteller Formula Calculator Revised Trauma Score (RTS) Calculator APACHE II ICU Mortality Score Calculator Target Body Weight from Body Fat % Calculator SOFA (Sequential Organ Failure Assessment) Score Calculator Friedewald LDL Cholesterol Calculator Ideal Body Weight (Robinson Formula) Calculator Ottawa Knee Rule Fracture Risk Calculator Adjusted Body Weight Calculator ROX Index for High-Flow Nasal Cannula Failure Prediction Calculator BUN/Creatinine Ratio Calculator AIMS65 Score for Upper-GI-Bleed In-Hospital Mortality Calculator PSI / PORT Pneumonia Severity Index Calculator RBC Transfusion Units Needed Calculator SIRS Criteria Count Calculator Sodium Deficit Calculator Rule of Nines Burn TBSA Calculator Body Density via Jackson-Pollock 3-Site Calculator MUST Malnutrition Universal Screening Tool Calculator Duke Activity Status Index (DASI / METs) Calculator PaO₂/FiO₂ Ratio (P/F Ratio) Calculator Maddrey Discriminant Function Calculator Maximum Heart Rate (Tanaka Formula) Calculator Pediatric Maintenance Fluid (4-2-1) Calculator APRI (AST to Platelet Ratio Index) Calculator ATRIA Stroke-Risk Score in Atrial Fibrillation Calculator Mayo Score for Ulcerative Colitis Activity Calculator Bishop Score for Cervical Favorability Calculator ABCD² TIA Stroke Risk Score Calculator Arterial Oxygen Content (CaO₂) Calculator CIWA-Ar Alcohol-Withdrawal Severity Score Calculator Young's Rule Pediatric Dose Calculator Delta Gap & Delta Ratio Calculator BISAP Score for Acute Pancreatitis Calculator Base Excess from ABG Calculator Pediatric Weight Estimate from Age Calculator FEV1 / FVC Ratio Calculator Maximum Heart Rate (Gellish Formula) Calculator LRINEC Necrotizing Fasciitis Score Calculator Cardiac Index from Cardiac Output and Body-Surface Area Calculator Opioid Morphine Milligram Equivalent (MME) Dose Calculator FIB-4 Liver Fibrosis Index Calculator Glasgow-Blatchford Upper-GI Bleeding Score Calculator GOLD COPD Spirometry Grade Calculator Dialysis URR (Urea Reduction Ratio) Calculator Ganzoni Iron Deficit Calculator LDL-C via Martin-Hopkins Equation Calculator Plasma Volume (Hakim Formula) Calculator Winters' Formula Respiratory Compensation Calculator Bicarbonate Deficit Calculator SMART-COP Pneumonia Severity Calculator Rockall Score for Upper-GI Bleed Calculator A-a Oxygen Gradient (Alveolar-Arterial) Calculator Oxygen Delivery (DO₂) from Cardiac Output and CaO₂ Calculator Transferrin Saturation Calculator Respiratory Exchange Ratio Calculator SAAG Serum-Ascites Albumin Gradient Calculator Revised Geneva Pulmonary Embolism Score Calculator Free Testosterone from Total T and SHBG (Vermeulen) Calculator CHADS₂ Stroke Risk Calculator Braden Scale Pressure Injury Risk Score Calculator Light's Criteria for Pleural Effusion Calculator Ejection Fraction from Ventricular Volumes Calculator Alveolar Gas Equation (PAO₂) Calculator West Nomogram A-a Gradient Calculator Ranson's Criteria (On Admission) for Pancreatitis Calculator SIRS Systemic Inflammatory Response Calculator BODE Index COPD Survival Calculator Estimated Blood Loss from Hemoglobin Drop Calculator Lille Model Score for Severe Alcoholic Hepatitis Calculator Morse Fall Scale Total Score Calculator Revised Geneva Score for Pulmonary Embolism Calculator Hyperglycaemia-Corrected Serum Sodium (Katz Formula) Calculator PHQ-9 Depression Severity Score Calculator NEWS2 (National Early Warning Score 2) Calculator Paediatric Blood Volume Estimate Calculator Urine Anion Gap Calculator Cardiac Output via the Fick Principle Calculator Surgical Apgar Score from EBL, Lowest HR, and Lowest MAP Calculator Pediatric Acetaminophen Dose Calculator Glucose Infusion Rate (GIR) Calculator PESI Pulmonary Embolism Severity Index Calculator BSA Haycock Calculator Osmolar Gap Calculator Non-HDL Cholesterol Calculator Duke Treadmill Score Calculator Renal Dose Adjustment via Cockcroft-Gault eGFR Calculator Pulse Pressure & Shock Index Calculator 24-Hour Urine Creatinine Clearance Calculator Static Lung Compliance Calculator GAD-7 Anxiety Severity Score Calculator Paediatric Body Surface Area (Mosteller) Calculator MASCC Febrile-Neutropenia Risk Score Calculator Killip Class Acute Heart Failure (STEMI) Calculator Adult Maintenance Fluids 4-2-1 Rule Calculator TIMI Risk Score for UA / NSTEMI Calculator Westley Croup Severity Score Calculator Albumin-Corrected Anion Gap Calculator Maximum Allowable Blood Loss from EBV and Hemoglobin Calculator Glasgow Prognostic Score (GPS) Oncology Calculator Hunt-Hess Clinical Grade for Subarachnoid Haemorrhage Calculator TIMI Risk Score for STEMI 30-Day Mortality Calculator Dog Ideal Weight from BCS Calculator Cat Ideal Weight from BCS Calculator Weight-Loss Calorie Deficit Target Calculator Baby Milk Supply by Weight Calculator Glasgow Coma Scale (GCS) Calculator CHA₂DS₂-VASc Stroke Risk Score Calculator Wells Criteria DVT Probability Score Calculator Protein Target by Activity Level Calculator Schofield Equations BMR by Age and Sex Calculator GFR (MDRD 4-Variable) Calculator Corrected QT Interval (QTc) Using Bazett's Formula Calculator Daily Fluid Needs by Weight Calculator APGAR Newborn Assessment Score Calculator Mifflin–St Jeor BMR Calculator Ankle-Brachial Index (ABI) Calculator Adjusted Body Weight for Drug Dosing Calculator Total Daily Water Intake from Weight Calculator CURB-65 Pneumonia Severity Score Calculator Centor Score for Strep Throat Calculator Wells Score for Pulmonary Embolism (PE) Calculator HbA1c to Average Glucose Calculator Wells DVT Clinical Prediction Rule Calculator Ottawa Ankle Rules Fracture Risk Calculator Daily Caloric Needs from BMR and Activity Level Calculator Macro Split from Daily Calories Calculator Kidney GFR Creatinine Clearance Calculator Revised Cardiac Risk Index (RCRI) Score Calculator Macronutrient Split from Daily Calories Calculator Child-Pugh Score Calculator Child-Pugh Liver Cirrhosis Score Calculator Corrected QT Interval (Bazett Formula) Calculator Ideal Weight from Height and Frame Size Calculator Modified Fischer Score for SAH Vasospasm Risk Calculator Lean Body Mass from Weight and Body Fat Calculator Body Surface Area — Du Bois Formula Calculator Induction of Labour Cervical Readiness Scoring Calculator Wells Score DVT Probability Calculator MUST Malnutrition Universal Screening Calculator Centor Score for Streptococcal Pharyngitis Calculator Estimated Blood Volume (Nadler) Calculator Silverman–Anderson Neonatal Respiratory Distress Score Calculator Calorie Deficit for Weight Loss Rate Calculator Adjusted Body Weight for Drug Dosing Calculator CKD-EPI eGFR Creatinine Calculator Framingham 10-Year CVD Risk Calculator Peak Expiratory Flow (Wright Formula) Calculator Modified Early Warning Score (MEWS) Calculator Cholesterol/HDL Ratio and Cardiovascular Risk Calculator Columbia SSRS Suicide Risk Stratification Calculator Opioid Equianalgesic Dose Conversion Calculator VO₂max Cooper 12-Minute Run Calculator Cockcroft-Gault Creatinine Clearance Calculator Norton Pressure Ulcer Risk Score Calculator Divine Formula Ideal Body Weight by Height Calculator Karvonen Target Heart Rate Zone Calculator Broselow Pediatric Emergency Weight Estimator Creatinine Clearance (Cockcroft–Gault) Calculator Hamilton Anxiety Rating Scale (HAM-A) Calculator Body Fat Percentage from Skinfold Measurements Calculator Calorie Burn by MET Activity Calculator Fagerström Nicotine Dependence Score Calculator AUDIT-C Alcohol Use Disorder Screening Calculator Gestational Weight Gain (IOM Guidelines) Calculator Simplified Disease Activity Index (SDAI) Calculator Richmond Agitation–Sedation Scale (RASS) Score Calculator Lung Age from FEV1 Spirometry Calculator Visceral Fat Rating from Waist and BMI Calculator Simplified SOFA Score (Organ Failure) Calculator Nutritional Risk Screening (NRS-2002) Total Score Calculator NEWS Score (National Early Warning Score) Calculator Fetal Weight Estimation (Hadlock Formula) Calculator MELD-Na (Sodium-Adjusted MELD) Liver Transplant Score Calculator 6-Minute Walk Distance Prediction Calculator Warfarin INR Dose Adjustment Calculator Fat-Free Mass Based Resting Metabolic Rate Calculator CHA₂DS₂-VASc Atrial Fibrillation Stroke Risk Calculator Nicotine Patch Daily Dose Calculator Body Surface Area Du Bois Formula Calculator Pneumonia Severity Index (PSI/PORT) Score Calculator Thermic Effect of Food TEF from Macros Calculator Plasma Osmolality (Winter Formula) Calculator NRS-2002 Nutritional Risk Screening Calculator Framingham Coronary Heart Disease Risk Score Calculator RASS Richmond Agitation-Sedation Score Calculator Daily Protein for Elderly Adults Calculator Pregnancy Due Date Calculator Harris-Benedict TDEE & Energy Needs Calculator Serum Osmol Gap Calculator Paediatric Fluid Maintenance (Holliday-Segar) Calculator GRACE Score for ACS In-Hospital Mortality Calculator Serum Anion Gap (Metabolic Acidosis) Calculator Weight Loss Weeks to Goal from Deficit Calculator ARISCAT Perioperative Pulmonary Risk Score Calculator SOFA Sepsis-Organ Failure Assessment Score Calculator Fractional Excretion of Urea (FeUrea) Calculator Ovulation Calculator Sleep Cycle Calculator BMI from Height and Weight (Metric & Imperial) Calculator Daily Water Intake Recommendation from Weight Calculator Pregnancy Due Date from Last Menstrual Period Calculator Ideal Body Weight from Height and Sex Calculator Calories Burned from MET, Body Weight, and Duration Calculator BMI for Children (Age-Adjusted Percentile) Calculator Body Roundness Index (BRI) from Waist and Height Calculator

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BMI, body fat, BMR, and other health screening tools — clearly labelled as informational rather than diagnostic, with citations for each formula.