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Free medical calculators and tools.
A1C to Blood Sugar
Convert A1C (HbA1c) to estimated average blood sugar in mg/dL and mmol/L. Understand your diabetes c
Blood Sugar to A1C
Convert average blood glucose to estimated A1C. Enter your average blood sugar reading in mg/dL or m
Cholesterol Ratio
Calculate your cholesterol ratio (total cholesterol to HDL). Assess cardiovascular risk with instant
LDL Cholesterol Calculator
Calculate LDL cholesterol using the Friedewald equation. Enter total cholesterol, HDL, and triglycer
VLDL Cholesterol Calculator
Calculate VLDL cholesterol from triglyceride levels. VLDL = Triglycerides / 5. Understand this compo
Triglyceride to HDL Ratio
Calculate your triglyceride to HDL cholesterol ratio. This marker helps assess insulin resistance an
Cholesterol Units Converter
Convert cholesterol between mg/dL and mmol/L. Works for total cholesterol, LDL, and HDL. Instant, ac
eGFR Calculator
Calculate estimated glomerular filtration rate (eGFR) using the CKD-EPI formula. Assess kidney funct
Creatinine Clearance Calculator
Calculate creatinine clearance (CrCl) using the Cockcroft-Gault equation. Essential for medication d
BUN Creatinine Ratio
Calculate the BUN to creatinine ratio. This helps distinguish types of kidney dysfunction and assess
Albumin Creatinine Ratio
Calculate your albumin-to-creatinine ratio (ACR) from urine test results. Assess kidney damage risk.
Protein Creatinine Ratio
Calculate protein-to-creatinine ratio (PCR) from urine test results. Estimate 24-hour protein excret
Anion Gap Calculator
Calculate serum anion gap from sodium, chloride, and bicarbonate. Diagnose metabolic acidosis types.
Corrected Calcium Calculator
Calculate corrected calcium adjusted for albumin levels. Accurately assess hypocalcemia and hypercal
Sodium Correction Calculator
Calculate sodium deficit for hyponatremia correction. Determine safe correction rates to avoid osmot
Corrected QT Interval Calculator
Calculate corrected QT interval (QTc) using Bazett or Fridericia formula. Assess risk of arrhythmias
MELD Score Calculator
Calculate MELD score for end-stage liver disease. Predict 3-month mortality and liver transplant pri
Child-Pugh Score Calculator
Calculate Child-Pugh score for cirrhosis severity. Assess liver disease class (A, B, C) and predict
ASCVD Risk Calculator
Calculate your 10-year atherosclerotic cardiovascular disease risk. Determine if you need statin the
Cardiovascular Disease Risk Calculator
Calculate your cardiovascular disease risk based on age, blood pressure, cholesterol, smoking, diabe
Framingham Risk Score Calculator
Calculate your 10-year coronary heart disease risk using the Framingham Risk Score. Enter age, chole
Cardiac Output Calculator
Calculate cardiac output from heart rate and stroke volume. Understand how much blood your heart pum
Cardiac Index Calculator
Calculate cardiac index by dividing cardiac output by body surface area. Normalize cardiac performan
Rate Pressure Product Calculator
Calculate rate pressure product (RPP) from heart rate and systolic blood pressure. Estimate myocardi
Mean Arterial Pressure Calculator
Calculate mean arterial pressure (MAP) from systolic and diastolic blood pressure. Assess perfusion
CHA2DS2-VASc Score Calculator
Calculate CHA2DS2-VASc score to assess stroke risk in atrial fibrillation. Determine need for antico
HAS-BLED Score Calculator
Calculate HAS-BLED score to assess bleeding risk in patients on anticoagulation for atrial fibrillat
Wells Score DVT Calculator
Calculate Wells Score for DVT risk assessment. Clinical decision tool to estimate probability of dee
Wells Score PE Calculator
Calculate Wells Score for pulmonary embolism risk. Clinical decision tool to estimate PE probability
Centor Score Calculator
Calculate Centor Score for strep pharyngitis. Clinical decision tool to determine likelihood of stre
CURB-65 Score Calculator
Calculate CURB-65 score for pneumonia severity. Estimates mortality risk and guides hospital admissi
APACHE II Score Calculator
Calculate APACHE II score for critically ill patients. Predicts ICU mortality using physiologic vari
SOFA Score Calculator
Calculate SOFA score for organ dysfunction and sepsis. Assesses respiratory, coagulation, liver, car
Glasgow Coma Scale Calculator
Calculate Glasgow Coma Scale score for brain injury assessment. Evaluates eye, verbal, and motor res
APGAR Score Calculator
Calculate APGAR score for newborn health assessment. Evaluates appearance, pulse, grimace, activity,
Body Surface Area Calculator
Calculate body surface area using Mosteller, DuBois, Haycock, or Gehan-George formulas. Essential fo
Drug Half-Life Calculator
Calculate how much medication remains in your system over time. Enter initial dose, half-life, and t
IV Drip Rate Calculator
Calculate IV drip rate in drops per minute. Enter volume, time, and drop factor for accurate intrave
IV Flow Rate Calculator
Calculate IV flow rate in mL/hr and mL/min. Enter total volume and infusion time for accurate intrav
Blood Glucose Converter
Convert blood glucose between mg/dL and mmol/L instantly. Essential tool for diabetes management acr
Insulin Dose Calculator
Calculate insulin bolus doses for meals and corrections. Enter blood glucose, carbs, and your ratios
Insulin Sensitivity Factor Calculator
Calculate your insulin sensitivity factor (correction factor) using the 1800 or 1500 rule. Determine
Insulin to Carb Ratio Calculator
Calculate your insulin-to-carbohydrate ratio using the 500 or 450 rule. Determine how many grams of
Diabetes Risk Calculator
Assess your risk of developing type 2 diabetes. Enter age, BMI, waist circumference, activity level,
HOMA-IR Calculator
Calculate HOMA-IR and HOMA-Beta from fasting glucose and insulin. Assess insulin resistance and beta
Absolute Neutrophil Count Calculator
Calculate absolute neutrophil count (ANC) from WBC and differential. Assess neutropenia risk for che
Reticulocyte Production Index Calculator
Calculate reticulocyte production index (RPI) to assess bone marrow response in anemia. Corrects for
Iron Deficiency Calculator
Assess iron deficiency with ferritin, TIBC, and serum iron. Calculate transferrin saturation and int
Transferrin Saturation Calculator
Calculate transferrin saturation percentage from serum iron and TIBC. Assess iron deficiency or over
ABG Interpreter Calculator
Interpret arterial blood gas results instantly. Identify acidosis, alkalosis, and compensation. Free
A-a Gradient Calculator
Calculate alveolar-arterial (A-a) oxygen gradient to assess hypoxemia causes. Differentiate V/Q mism
NIH Stroke Scale Calculator
Calculate NIH Stroke Scale (NIHSS) score to assess stroke severity. Standardized neurological exam f
Stroke Risk Calculator
Calculate your 10-year stroke risk based on Framingham criteria. Assess modifiable risk factors and
Paracetamol Dosage Calculator
Calculate safe paracetamol (acetaminophen) dosage by weight and age. Avoid overdose with accurate pe
Ibuprofen Dosage Calculator
Calculate safe ibuprofen dosage for adults and children by weight. Accurate dosing for pain, fever,
Acetaminophen Dosage Calculator
Calculate safe acetaminophen (paracetamol) doses by weight and age. Get single dose and daily maximu
Amoxicillin Dosage Calculator
Calculate amoxicillin doses for adults and children by weight and infection severity. Get single dos
Benadryl Dosage Calculator
Calculate safe Benadryl (diphenhydramine) doses for allergies, sleep, and itching. Get dose amounts,
Tylenol Dosage Calculator
Calculate safe Tylenol doses for adults and children. Get single dose, frequency, and daily maximum
Melatonin Dosage Calculator
Find the right melatonin dose for sleep problems, jet lag, or shift work. Get dose amount, timing, a
Adderall Dosage Calculator
Calculate recommended Adderall starting doses and typical ranges for ADHD and narcolepsy. Get dosing
Aleve Dosage Calculator
Calculate safe Aleve (naproxen sodium) doses for pain and inflammation. Get dose amounts, frequency,
Cefdinir Dosage Calculator
Calculate cefdinir doses for common infections in children and adults. Get single dose, frequency, a
Peptide Dosage Calculator
Calculate peptide doses and injection volumes for BPC-157, TB-500, Ipamorelin, CJC-1295, and MK-677.
Blood Alcohol Content (BAC) Calculator
Calculate your estimated blood alcohol content based on drinks consumed, body weight, and time elaps
Cigarette Cost Calculator
Calculate how much you spend on cigarettes daily, monthly, yearly, and over 10 years. See the true f
Pack Years Calculator
Calculate pack-years to quantify smoking exposure. Medical professionals use this metric to assess l
Smoking Recovery Timeline Calculator
Track your smoke-free progress and see what health improvements occur at each milestone. Visualize y
Fagerström Nicotine Dependence Test
Assess your nicotine dependence level with the Fagerström Test for Nicotine Dependence (FTND). Six-q
Sobriety Counter Calculator
Track your recovery journey. Calculate days, weeks, months, and years of sobriety from alcohol or su
AUDIT Alcohol Screening Calculator
Screen for risky alcohol use with the AUDIT-C, a validated 3-question version of the WHO Alcohol Use
CIWA Score Calculator
Calculate CIWA-Ar score to assess alcohol withdrawal severity. Medical tool for monitoring withdrawa
CAGE Questionnaire Calculator
The CAGE questionnaire is a fast 4-question screening tool for alcohol problems. Scores of 2+ sugges
Addiction Life Expectancy Impact Calculator
Estimate the impact of substance use on life expectancy. See how tobacco, alcohol, opioids, and othe
HEART Score Calculator
Calculate HEART Score for chest pain risk stratification. Assess 30-day MACE risk using History, ECG
Medication Dosage Calculator by Weight
Calculate medication dosage based on body weight. Determine appropriate drug doses using mg/kg calcu
Melanoma Skin Cancer Risk Calculator
Calculate melanoma skin cancer risk quickly and accurately. Enter your values and get instant result
Sunburn Time Uv Index Calculator
Calculate sunburn time uv index quickly and accurately. Enter your values and get instant results wi
Spf Sunscreen Protection Time Calculator
Calculate spf sunscreen protection time quickly and accurately. Enter your values and get instant re
Uv Exposure Calculator
Calculate uv exposure quickly and accurately. Enter your values and get instant results with this fr
Vitamin D From Sun Exposure Calculator
Calculate vitamin d from sun exposure quickly and accurately. Enter your values and get instant resu
Noise Exposure Hearing Damage Calculator
Calculate noise exposure hearing damage quickly and accurately. Enter your values and get instant re
Hearing Loss Risk Calculator
Calculate hearing loss risk quickly and accurately. Enter your values and get instant results with t
Vision Prescription 20/20 Calculator
Calculate vision prescription 20/20 quickly and accurately. Enter your values and get instant result
Visual Acuity Converter Calculator
Calculate visual acuity converter quickly and accurately. Enter your values and get instant results
Lung Capacity Fev1 Calculator
Calculate lung capacity fev1 quickly and accurately. Enter your values and get instant results with
Peak Flow Asthma Calculator
Calculate peak flow asthma quickly and accurately. Enter your values and get instant results with th
Asthma Control Test Act Calculator
Calculate asthma control test act quickly and accurately. Enter your values and get instant results
Copd Assessment Cat Score Calculator
Calculate copd assessment cat score quickly and accurately. Enter your values and get instant result
Pneumonia Severity Index Psi Calculator
Calculate pneumonia severity index psi quickly and accurately. Enter your values and get instant res
Pain Scale Nrs Vas Calculator
Calculate pain scale nrs vas quickly and accurately. Enter your values and get instant results with
Opioid Equianalgesic Calculator
Calculate opioid equianalgesic quickly and accurately. Enter your values and get instant results wit
Morphine Milligram Equivalent Calculator
Calculate morphine milligram equivalent quickly and accurately. Enter your values and get instant re
Colorectal Cancer Risk Calculator
Calculate colorectal cancer risk quickly and accurately. Enter your values and get instant results w
Lung Cancer Risk Calculator
Calculate lung cancer risk quickly and accurately. Enter your values and get instant results with th
Cancer Survival Rate By Type Calculator
Calculate cancer survival rate by type quickly and accurately. Enter your values and get instant res
Thyroid Tsh Level Checker Calculator
Calculate thyroid tsh level checker quickly and accurately. Enter your values and get instant result
Cortisol Level Checker Calculator
Calculate cortisol level checker quickly and accurately. Enter your values and get instant results w
Blood Donation Eligibility Calculator
Calculate blood donation eligibility quickly and accurately. Enter your values and get instant resul
Blood Type Parents To Child Calculator
Calculate blood type parents to child quickly and accurately. Enter your values and get instant resu
Blood Volume Calculator
Calculate blood volume quickly and accurately. Enter your values and get instant results with this f
Blood Transfusion Volume Calculator
Calculate blood transfusion volume quickly and accurately. Enter your values and get instant results
Skin Age Calculator
Calculate skin age quickly and accurately. Enter your values and get instant results with this free
Thc Tolerance Calculator
Calculate thc tolerance quickly and accurately. Enter your values and get instant results with this
Blood Oxygen Saturation Level Calculator
Calculate blood oxygen saturation level quickly and accurately. Enter your values and get instant re
Body Temperature Converter Fahrenheit Celsius Calculator
Calculate body temperature converter fahrenheit celsius quickly and accurately. Enter your values an
Fever Checker Normal Temperature Calculator
Calculate fever checker normal temperature quickly and accurately. Enter your values and get instant
Flu Risk Assessment Calculator
Calculate flu risk assessment quickly and accurately. Enter your values and get instant results with
Covid Risk Calculator
Calculate covid risk quickly and accurately. Enter your values and get instant results with this fre
Surgical Risk Asa Calculator
Calculate surgical risk asa quickly and accurately. Enter your values and get instant results with t
Anesthesia Risk Calculator
Calculate anesthesia risk quickly and accurately. Enter your values and get instant results with thi
Wound Healing Time Calculator
Calculate wound healing time quickly and accurately. Enter your values and get instant results with
Scar Assessment Scale Calculator
Calculate scar assessment scale quickly and accurately. Enter your values and get instant results wi
Ankle Brachial Index Abi Calculator
Calculate ankle brachial index abi quickly and accurately. Enter your values and get instant results
Crp Level Risk Inflammation Calculator
Calculate crp level risk inflammation quickly and accurately. Enter your values and get instant resu
Esr Sed Rate Calculator
Calculate esr sed rate quickly and accurately. Enter your values and get instant results with this f
Lifetime Cost Of Smoking Calculator
Calculate lifetime cost of smoking quickly and accurately. Enter your values and get instant results
Vaping Cost Calculator
Calculate vaping cost quickly and accurately. Enter your values and get instant results with this fr
Nicotine Content Vape Cigarette Calculator
Calculate nicotine content vape cigarette quickly and accurately. Enter your values and get instant
Covid Vaccine Schedule Calculator
Calculate covid vaccine schedule quickly and accurately. Enter your values and get instant results w
Allergy Severity Score Calculator
Calculate allergy severity score quickly and accurately. Enter your values and get instant results w
Migraine Frequency Tracker Calculator
Calculate migraine frequency tracker quickly and accurately. Enter your values and get instant resul
Headache Diary Tracker Calculator
Calculate headache diary tracker quickly and accurately. Enter your values and get instant results w
Gout Risk Uric Acid Calculator
Calculate gout risk uric acid quickly and accurately. Enter your values and get instant results with
Kidney Stone Risk Calculator
Calculate kidney stone risk quickly and accurately. Enter your values and get instant results with t
Fasting Blood Sugar Level Normal Range Calculator
Calculate fasting blood sugar level normal range quickly and accurately. Enter your values and get i
Postprandial Blood Glucose Calculator
Calculate postprandial blood glucose quickly and accurately. Enter your values and get instant resul
Bac Blood Alcohol Calculator
Calculate bac blood alcohol quickly and accurately. Enter your values and get instant results with t