Free Medical Calculators & Clinical Health Tools
Accurate, evidence-based clinical calculators and health reference tools built on published medical guidelines and peer-reviewed formulas. 100% free to use, private by design, with no registration required.
22
Clinical Tools & Calculators
9
Medical Specialties
100%
Peer-Reviewed Sourcing
Browse Calculators by Medical Specialty
Explore clinical and wellness calculators organized by clinical discipline. Every tool documents its mathematical equations, validation studies, and reference guidelines.
Clinical Calculators
Access clinical calculators and diagnostic equations for healthcare providers, built strictly on published peer-reviewed medical guidelines.
Explore tools (19) →Diabetes Calculators
Manage diabetes with precision tools: calculate insulin correction factors, unit conversions, time-in-range metrics, and digital logbooks.
Explore tools (4) →Women's Health & Ovulation
Explore women's health calculators for natural menopause age estimation, fertile window predictions, and gestational tracking.
Explore tools (5) →Obstetrics & Pregnancy
Calculate pregnancy milestones, gestational age, IVF due dates, and healthy weight gain ranges with evidence-based obstetric calculators.
Explore tools (5) →Kidney Function & eGFR
Evaluate renal function and CKD staging using the updated, race-free CKD-EPI 2021 eGFR equations. Accurate clinical nephrology references.
Explore tools (1) →Medical Unit Converters
Convert clinical laboratory values, blood glucose metrics, and liquid medication dosages instantly with verified medical conversion factors.
Explore tools (2) →Medication Dosing & PK
Calculate weight-based pediatric dosages, liquid mg-to-mL concentrations, and drug half-life elimination curves with clinical accuracy.
Explore tools (3) →Cardiovascular & Blood Pressure
Assess cardiovascular risks with blood pressure category checkers, multi-reading averagers, heart age models, and lipid ratio tools.
Explore tools (4) →Pediatric & Child Health
Track infant formula volume, pediatric dosing, and child weight percentiles against official CDC and AAP growth standards.
Explore tools (2) →Most-Used Clinical & Health Calculators
Instant access to our most frequently used clinical reference utilities, renal staging models, and metabolic estimators.
Correction Factor Calculator
Calculate your insulin sensitivity factor and estimated correction dose using the 1800 Rule and 1500 Rule.
Use tool →Pregnancy Weight Gain Calculator
Estimate healthy gestational weight gain based on pre-pregnancy BMI using IOM 2009 guidelines.
Use tool →Fertile Window Calculator
Estimate your fertile window and ovulation day based on your menstrual cycle information. Educational planning tool using the calendar method.
Use tool →Kidney Function Checker
Estimate your glomerular filtration rate (eGFR) using the race-free CKD-EPI 2021 creatinine equation. Educational reference for understanding kidney filtration.
Use tool →IVF Due Date Calculator
Estimate your expected due date after an IVF embryo transfer based on the transfer date and embryo age. Educational reference using accepted IVF pregnancy dating formulas.
Use tool →Glucose Unit Converter
Convert glucose values between mg/dL and mmol/L instantly. Bidirectional unit converter using the IFCC-recommended conversion factor.
Use tool →Half-life Calculator
Estimate the remaining amount of a substance based on its half-life using the standard exponential decay formula.
Use tool →Time in Range Calculator
Calculate the percentage of glucose readings that fall within, below, and above your selected target range. Educational tracking tool based on the International Consensus on Time in Range.
Use tool →Blood Pressure Average Calculator
Calculate the average systolic and diastolic blood pressure from multiple readings. Educational reference for understanding blood pressure measurements using the American Heart Association categories.
Use tool →Gestational Age Calculator
Estimate gestational age, due date, and conception date using standard pregnancy dating methods. Educational reference based on LMP, due date, or conception date.
Use tool →Child Weight Percentile Calculator
Estimate your child's weight percentile using CDC growth chart reference data. Educational tool for tracking weight-for-age from birth to 20 years.
Use tool →Baby Formula Calculator
Estimate daily formula needs for healthy full-term infants based on age and weight. Educational reference using AAP feeding guidelines for the first 12 months.
Use tool →Triglyceride / HDL Ratio Calculator
Calculate your triglyceride-to-HDL cholesterol ratio using standard lipid values. Educational reference for understanding the mathematical relationship between these two lipid panel components.
Use tool →Diabetes Logbook Tracker
Record and review blood glucose readings with date, time, meal context, and notes. Educational tracking tool for personal record keeping.
Use tool →Heart Age Calculator
Estimate your heart age based on key cardiovascular risk factors including age, sex, blood pressure, cholesterol, smoking, and diabetes status. Educational reference using Framingham-derived risk methodology.
Use tool →Menopause Age Calculator
Estimate your expected age at natural menopause based on evidence-informed factors including smoking, family history, and age at first period. Educational reference using population data.
Use tool →Calorie Calculator
Estimate your total daily energy expenditure (TDEE), basal metabolic rate (BMR), and optimal macronutrient breakdown. Educational reference using the Mifflin-St Jeor equation for weight management.
Use tool →Water Intake Calculator
Estimate your recommended daily water intake based on body weight, activity level, exercise, climate, and life stage. Educational reference based on NASEM hydration guidelines.
Use tool →Blood Pressure Category Checker
Determine your blood pressure category based on a single systolic and diastolic reading using the AHA/ACC 2017 hypertension guideline classification. Educational reference only.
Use tool →mg to mL Converter
Convert milligrams (mg) to milliliters (mL) using medication concentration. Enter the amount in mg and the concentration to calculate the equivalent volume. Educational reference only, not for dosing.
Use tool →Child Dosage Calculator
Calculate pediatric medication doses based on weight using mg/kg or mg/kg/day dosing. Educational reference only, not for medical decision-making.
Use tool →Calorie Burn Calculator
Estimate calories burned during physical activity using MET values from the Compendium of Physical Activities. Educational reference for walking, running, cycling, swimming, and more.
Use tool →Find Your Clinical Calculator or Health Tool
Access our complete library of peer-reviewed medical formulas, pediatric dosing converters, and metabolic calculators. Fast, accurate, 100% free, and private.
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