Health

A1C calculator converts Hemoglobin A1C to estimated average blood sugar (eAG) in mg/dL and mmol/L. Track diabetes trends with clear context.

Winters Formula calculator applies triple exponential smoothing to forecast time series with trend and seasonal patterns. Free, instant, accurate.

Urine output calculator measures mL/kg/hr rates, flags oliguria or polyuria, and tracks fluid balance to assess kidney function and hydration status.

URR calculator computes the Urea Reduction Ratio from pre- and post-dialysis BUN levels to assess hemodialysis adequacy against KDOQI targets.

VBAC calculator estimates vaginal birth after cesarean success probability using maternal age, delivery history, BMI, and clinical factors for birth planning.

Venous blood pH calculator uses Henderson-Hasselbalch to classify acid-base disorders from VBG parameters including pH, HCO₃⁻, PCO₂, and base excess.

Vital capacity calculator predicts VC using reference equations for age, height, gender, ethnicity, and smoking to support pulmonary function assessment.

Weight gain calculator uses the Mifflin-St Jeor equation to estimate daily calorie surplus, macros, and weeks to target for healthy weight gain.

Weight loss percentage calculator shows how much body weight you have lost as a percentage, plus BMI change and weekly rate from start to current weight.

Weight percentile calculator ranks your weight relative to peers by age and gender using BMI analysis and population reference data for health insights.

Weight Watchers points calculator computes SmartPoints or PointsPlus for any food from its nutrition label to support your daily WW budget tracking.

Wells Score calculator for pulmonary embolism assesses PE pretest probability using 7 validated clinical criteria to guide D-dimer and imaging decisions.

Transferrin saturation calculator uses serum iron and TIBC to assess iron status, diagnose iron deficiency anemia, and detect iron overload.

TTKG calculator computes transtubular potassium gradient to assess renal potassium handling and evaluate hypokalemia or hyperkalemia causes.

Tylenol dosage calculator computes safe acetaminophen doses for children and adults by weight and form — liquid, 325 mg, or 500 mg tablets.

Tylenol overdose calculator assesses acetaminophen toxicity risk by mg/kg dose, time since ingestion, and formulation type for emergency triage.

Urine anion gap calculator (Na + K − Cl) differentiates renal tubular acidosis from GI causes of normal anion gap metabolic acidosis.

SOFA Score calculator evaluates six organ systems to quantify dysfunction, predict ICU mortality, and support sepsis diagnosis in critically ill patients.

Sperm analysis calculator scores count, motility, morphology, and vitality against WHO 6th edition limits to produce a fertility score and quality grade.

Standard drink calculator converts volume and ABV to standard drinks, UK units, estimated blood alcohol concentration, and calories for responsible drinking.

Stillbirth risk calculator estimates fetal mortality risk using maternal age, gestational age, and clinical factors to guide prenatal monitoring decisions.

STOP-BANG calculator screens for obstructive sleep apnea risk using the 8-question validated questionnaire to identify low, intermediate, or high OSA risk.

Stroke volume calculator computes SV, ejection fraction, cardiac output, and cardiac index from LVEDD, LVESD, and heart rate using the cube method.

TDEE calculator uses Mifflin-St Jeor and Katch-McArdle formulas to find daily calorie needs for weight loss, maintenance, or muscle gain.

Testosterone to estradiol ratio calculator computes T:E2 ratio from hormone lab values to assess hormone balance, fertility, and endocrine wellness.

TI-RADS calculator scores thyroid nodule ultrasound features using ACR criteria to classify malignancy risk and recommend FNA biopsy or surveillance.

Tidal volume calculator computes IBW-based 6–8 mL/kg targets for lung-protective ventilation and derives TV from respiratory rate and minute ventilation.

TIMI risk score for UA/NSTEMI calculates 14-day risk of death, MI, or urgent revascularization to guide acute coronary syndrome management.

TIMI STEMI score calculator predicts 30-day mortality risk in ST-elevation myocardial infarction using age, vitals, Killip class, and clinical features.

Tinetti calculator assesses fall risk in elderly patients by scoring 17 balance and gait items up to 28 points to guide rehabilitation and prevention.

Total body water calculator uses the Watson formula to estimate TBW in liters and percentage from age, gender, height, and weight for hydration assessment.

Tramadol dosage calculator recommends safe single and daily doses adjusted for weight, age, renal function, hepatic status, and pain severity.

Sodium change calculator corrects pseudohyponatremia in hypertriglyceridemia using the 0.002 mEq/L per mg/dL lipid-interference formula.

Sodium correction calculator computes deficit, infusion volume, and correction time for hyponatremia and hypernatremia using TBW-based formulas.

Sodium correction rate calculator provides guideline-based safe correction rates for hyponatremia and hypernatremia based on duration, severity, and fluid type.

Sodium deficit calculator uses body-fat-adjusted TBW to compute mEq deficit, sodium mass, and NaCl equivalent for hyponatremia replacement planning.

Sodium in salt calculator shows mg of sodium in table, sea, kosher, and Himalayan salt by weight and tracks your daily recommended sodium limit percentage.

COVID-19 reopening calculator assesses transmission, vaccination, ventilation, and protocols to recommend a reopening phase, capacity limit, and safety score.

Reverse due date calculator works backwards from your due date to find conception date, LMP, ovulation, implantation, and key pregnancy milestones instantly.

Revised Geneva Score calculator for PE pre-test probability using 10 validated clinical criteria. Bedside clinical decision support tool.

Revised Trauma Score calculator computes RTS from GCS, systolic BP, and respiratory rate to assess trauma severity and estimate survival probability for triage.

RFM calculator estimates relative fat mass from height and waist circumference without a scale. More accurate than BMI for body composition assessment.

PVR calculator computes pulmonary vascular resistance in Wood units and dyn·s·cm⁻⁵ from mPAP, PCWP, and cardiac output for hemodynamic assessment.

QP/QS calculator scores physical, mental, and social health domains to generate Quality Points and a QS wellness category for personal health tracking.

qSOFA score calculator screens for sepsis-related organ failure risk using respiratory rate, systolic blood pressure, and GCS for rapid bedside assessment.

QTc calculator corrects QT interval for heart rate using Bazett, Fridericia, or Framingham formulas to assess cardiac arrhythmia risk from ECG data.

Quarantine activity calculator scores isolation routines across exercise, sleep, and social connection to optimize wellness and productivity during quarantine.

Protein calculator estimates daily protein intake by body weight, activity level, fitness goal, and age. Built for athletes, dieters, and older adults.

Protein creatinine ratio calculator computes urine PCR from spot protein and creatinine values to screen for proteinuria and assess kidney function.

PSA density calculator divides PSA level by prostate volume to improve prostate cancer screening accuracy and reduce unnecessary biopsies from benign BPH.

PSA doubling time calculator uses two serial PSA measurements to estimate prostate cancer growth rate and classify disease kinetics from slow to very rapid.

PSI pressure converter converts PSI, mmHg, kPa, bar, atm, cmH2O, Pa, and MPa with configurable precision for medical device calibration and respiratory care.

RMR calculator estimates resting metabolic rate using Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle. Find daily calorie needs at rest and with activity.

RSBI calculator computes the rapid shallow breathing index from respiratory rate and tidal volume to assess weaning readiness from mechanical ventilation.

SAAG calculator computes the serum-ascites albumin gradient to classify ascites as portal hypertensive or non-portal, guiding faster differential diagnosis.

SAPS II calculator scores ICU illness severity from 15 variables and predicts hospital mortality risk to support critical care triage decisions.

SCORAD calculator assesses atopic dermatitis severity using extent, intensity, and subjective symptoms. Grades eczema mild, moderate, or severe to guide care.

Calculate safe paracetamol (acetaminophen) doses for children and adults by weight, age, and form. Get mg dose, ml volume, or tablet count instantly.

Calculate burn injury fluid requirements using the Parkland Formula (4 mL×kg×%TBSA). Get 24-hour totals, 8-hour and 16-hour rates for emergency burn care.

Calculate predicted peak expiratory flow (PEF) in L/min by age, height, gender, ethnicity, and smoking status for asthma and COPD respiratory assessment.

Calculate your Pearl Index wellness score using vital signs, BMI, cholesterol, blood sugar, lifestyle, and family history for a comprehensive health assessment.

Use the PECARN pediatric head trauma rule to assess ciTBI risk in children and guide CT scan decisions. Evidence-based risk stratification for emergency care.

PF ratio calculator analyzes albumin and globulin fractions from blood tests to assess liver function, nutritional status, and protein metabolism disorders.

PISA calculator scores patient safety risk across medications, mobility, cognition, and health literacy to identify hazards and guide clinical interventions.

Plasma osmolality calculator uses sodium, glucose, and BUN to estimate blood osmolality, assess hydration status, and detect SIADH or dehydration.

Plasma volume calculator estimates blood plasma volume using weight, hematocrit, or body surface area methods for clinical and plasmapheresis planning.

Pokemon Go weight loss calculator estimates calories burned and weight loss potential from gameplay based on walking intensity, time, and personal metrics.

Calculate a weight-based melatonin starting dose for sleep, jet lag, or shift work. Covers adults and children with purpose-adjusted dosing recommendations.

Compute the MELD and MELD-Na scores from creatinine, bilirubin, INR, and sodium to estimate 3-month mortality in end-stage liver disease.

Calculate the Mentzer Index (MCV ÷ RBC) to differentiate thalassemia trait from iron deficiency anemia using standard CBC values.

Assess metabolic syndrome using ATP III criteria: waist, triglycerides, HDL, blood pressure, and fasting glucose. Diagnoses when ≥3 criteria are met.

Estimate median survival in metastatic castration-resistant prostate cancer using a simplified Halabi nomogram scoring model with 7 clinical factors.

INR calculator converts prothrombin time and ISI to International Normalized Ratio for monitoring warfarin therapy and blood clotting function.

Insulin dosage calculator computes meal and correction doses using blood glucose, carb intake, ICR, ISF, and insulin on board for diabetes management.

IQ percentile calculator converts any IQ score to a population percentile using normal distribution statistics, with intelligence classification and context.

Iron deficiency calculator assesses iron status from hemoglobin, ferritin, transferrin saturation, and TIBC with personalized interpretation and guidance.

Isotretinoin dose calculator computes daily dose, cumulative target, and treatment duration based on weight and dosing protocol for acne therapy planning.

Hematocrit to hemoglobin ratio calculator computes Hct/Hgb ratio from CBC results to assess red blood cell quality and detect anemia or polycythemia.

HOMA-IR calculator estimates insulin resistance from fasting glucose and insulin. Supports mg/dL, mmol/L, μU/mL, and pmol/L with risk classification.

Hot car calculator predicts parked vehicle interior temperature from outside heat, sunlight, car color, and tinting to assess danger for children and pets.

HSI calculator scores nicotine dependence using time to first cigarette and daily cigarette count. Get evidence-based cessation strategy recommendations.

Hydroxychloroquine dose calculator computes safe daily dose by weight or BSA with automatic max-dose capping for lupus, arthritis, and malaria therapy.

Ibuprofen dosage calculator estimates common child and adult single doses, liquid volume, tablet count, and the daily maximum from weight and schedule.

ICH score calculator estimates intracerebral hemorrhage severity and maps the result to a 30-day mortality reference using age, GCS, volume, and CT features.

ICH volume calculator estimates intracerebral hemorrhage size with ABC/2 or ellipsoid formulas and adds a simple volume severity classification.

Ideal weight calculator compares Devine, Robinson, Miller, Hamwi, and BMI-based reference weights with a simple frame-size adjustment.

IIFYM calculator converts calories and macro percentages into grams of protein, carbs, and fat, with an optional body-weight protein comparison.

Head circumference percentile calculator uses CDC growth charts to assess brain development and detect potential growth abnormalities in children.

Heart failure life expectancy calculator estimates survival probability using ejection fraction, NYHA class, and comorbidities. Get personalized prognosis.

Heart score calculator assesses cardiovascular risk using blood pressure, cholesterol, BMI, and lifestyle factors. Get your risk score and recommendations.

Height calculator converts cm, m, feet, and inches instantly. Calculate BMI and ideal weight range for comprehensive health assessment.

Height percentile calculator uses CDC growth charts to rank your height by age and gender. Get z-score, percentile, and growth category assessment instantly.

Hand sanitizer calculator evaluates alcohol concentration effectiveness against COVID-19, cost per use, and days of supply. Free, instant results.

Happiness calculator scores your well-being across 8 life dimensions — relationships, career, health, and more. Get instant insights and recommendations.

Harris-Benedict BMR calculator computes your basal metabolic rate and daily calorie needs by gender, weight, height, age, and activity level.

HAS-BLED calculator scores bleeding risk in anticoagulated patients using 8 validated clinical criteria. Guides safe anticoagulation therapy decisions.

HCG levels calculator computes pregnancy hormone doubling time from two blood test readings and compares with normal early-pregnancy reference ranges.

Glycemic index calculator computes GI and glycemic load for individual foods or full meals. Manage blood sugar for diabetes and healthy eating.

Glycemic load calculator multiplies GI by carbohydrates to show the true blood sugar impact of a food portion. Free tool for diabetic meal planning.

Gestational age calculator finds your pregnancy week, trimester, and due date using LMP, conception date, or ultrasound. Free and accurate.

GFR calculator estimates kidney function using CKD-EPI, MDRD, and Cockcroft-Gault formulas from serum creatinine, age, and gender. Free tool.

GIR calculator computes glucose infusion rate in mg/kg/min from concentration, flow rate, and patient weight. Essential for critical care and neonatal care.

Framingham Risk Calculator estimates 10-year cardiovascular disease risk using the validated point-scoring algorithm. Free, instant CVD assessment.

Free testosterone calculator uses the Vermeulen formula to compute free and bioavailable testosterone from total testosterone, SHBG, and albumin values.

Free water deficit calculator estimates replacement volume for hypernatremia using serum sodium and body weight. Includes safe sodium correction rates.

Fresh frozen plasma dose calculator determines FFP dosage for warfarin reversal and bleeding disorders based on patient weight and clinical indication.

Fundal height calculator uses McDonald's rule to assess fetal growth, compare measurements to gestational age, and track growth rate across prenatal visits.

Fetal weight percentile calculator uses gestational age and estimated fetal weight to rank growth against Hadlock standards. Identify SGA, AGA, or LGA status.

FEUrea calculator computes fractional excretion of urea to differentiate prerenal from intrinsic acute kidney injury. Essential nephrology diagnostic tool.

FEV1/FVC ratio calculator assesses pulmonary function and detects obstructive lung disease. Enter spirometry values to diagnose COPD and airway obstruction.

FFMI calculator measures fat-free mass index from weight, height, and body fat percentage. Track muscle mass for athletes, bodybuilders, fitness enthusiasts.

FIB-4 calculator scores liver fibrosis non-invasively using age, AST, ALT, and platelet count. Screen for advanced fibrosis in chronic liver disease.

Fagerstrom Test calculator scores nicotine dependence on 6 validated questions. Identify your addiction level and get personalized smoking cessation guidance.

Fat intake calculator uses Mifflin-St Jeor BMR and activity level to compute daily fat grams by health goal. Free personalized nutrition planning tool.

Fatigue Severity Scale (FSS) calculator scores 9 questions to assess fatigue severity. Identify clinical fatigue and get evidence-based guidance.

FENa calculator computes fractional excretion of sodium from urine/serum values to differentiate prerenal azotemia from intrinsic acute kidney injury.

Fertility by age calculator estimates monthly conception probability and 12-month cumulative chance using age, cycle regularity, and lifestyle factors.

Diabetes risk calculator scores Type 2 diabetes risk using age, BMI, family history, activity, blood pressure, and lifestyle factors. Free, instant result.

Diabetic ketoacidosis calculator computes anion gap, delta ratio, corrected sodium, and osmolal gap to classify DKA severity for emergency management.

DIC syndrome calculator applies the ISTH overt DIC score using platelets, D-dimer, PT, and fibrinogen to assess disseminated intravascular coagulation severity.

Diet risk score calculator evaluates nutritional health risk from diet quality, BMI, activity, smoking, alcohol, and chronic disease history. Free and instant.

DLBCL prognosis calculator computes IPI and R-IPI scores with 5-year survival estimates to guide treatment planning for diffuse large B-cell lymphoma.

Cholesterol ratio calculator computes Total/HDL, LDL/HDL, and Non-HDL values from your lipid panel to assess cardiovascular risk with evidence-based thresholds.

Cholesterol units converter converts Total, HDL, LDL, and Triglycerides between mg/dL, mmol/L, and mg/L for accurate international lipid panel analysis.

Cigarette calculator estimates daily, monthly, and yearly smoking costs, total nicotine intake, and financial savings from quitting to motivate cessation.

CIWA calculator scores alcohol withdrawal severity across 10 clinical criteria to guide safe detoxification management and determine appropriate level of care.

Clomid ovulation calculator predicts ovulation date, fertile window, and next period based on your cycle length and clomiphene treatment schedule.