Clinical Calculators for Doctors
Fast, accurate and completely free. Every calculation runs in your browser — nothing is stored or shared.
Clinical calculators — for doctors
Fast bedside maths, computed privately in your browser.
BMI Calculator
Weight category and healthy range with WHO and Asian-Indian cut-offs.
Open tool📐BSA Calculator
Mosteller and Du Bois formulas for drug and chemotherapy dosing.
Open tool🩺eGFR Calculator
Race-free CKD-EPI 2021 with CKD staging and Cockcroft-Gault.
Open tool👶Pediatric Dose
mg/kg dosing with volume-to-draw and a maximum-dose cap.
Open tool💧IV Drip Rate
Drops per minute for gravity sets and mL/hr for infusion pumps.
Open tool🤰Pregnancy Due Date
EDD, gestational age, trimester and days remaining from the LMP.
Open tool🧠Glasgow Coma Scale
Eye, verbal and motor scoring with total GCS and severity.
Open toolHospital tools — for administrators
Benchmark readiness and quantify the value of going digital.
NABH Readiness
Score your hospital across six NABH chapters and get a gap report.
Open tool📈Hospital ROI
Estimate recoverable revenue from reduced billing leakage and no-shows.
Open toolFor students & researchers
Acid–base, biostatistics, evidence-based medicine and lab-bench calculators.
ABG Interpreter
Identify the acid–base disorder, compensation and anion gap from a blood gas.
Open tool👥Sample Size
Participants per group to compare two proportions or means at chosen power.
Open tool🎯Diagnostic Test
Sensitivity, specificity, PPV, NPV and likelihood ratios with 95% CIs.
Open tool📊Risk & NNT
Relative risk, odds ratio, ARR and number needed to treat from a 2×2 table.
Open tool🧪Dilution & Molarity
C₁V₁=C₂V₂ dilutions and molarity ↔ mass conversions.
Open tool📈Fagan Nomogram
Turn pretest probability + likelihood ratios into post-test probability.
Open tool🔁Unit Converter
Convert lab results between conventional (mg/dL) and SI (mmol/L) units.
Open toolMore tools coming soon — pregnancy due date, GCS, unit converters and Fagan nomogram.