Medical Calculators
Built for Clinicians

Evidence-based tools for nephrologists, radiologists, and physicians. Fast, free, mobile-optimized.

🧮 Evidence-Based 📱 Mobile-First ⚡ Instant Results 🏥 Clinical-Grade
⚕️ Clinical Disclaimer: These calculators are for informational and educational purposes only. Results must be interpreted in the context of the full clinical picture by a qualified healthcare professional. Not a substitute for clinical judgment or formal medical advice.

Available Calculators

Click any calculator to open it — no signup required.

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Nephrology

eGFR Calculator (CKD-EPI 2021)

Estimate glomerular filtration rate using the 2021 CKD-EPI equation. Includes CKD stage classification per KDIGO guidelines.

Creatinine Age Sex
Calculate eGFR →
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Radiology

wRVU Calculator

Radiology work RVU lookup by CPT code. Calculate total wRVUs and annualized projections for CT, MRI, X-ray, US, and IR procedures.

CPT Code Volume
Calculate wRVUs →
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Imaging

CT Radiation Dose Calculator

Convert CTDIvol and DLP to effective dose in mSv using ICRP conversion factors. Compare against ACR Dose Index Registry benchmarks.

CTDIvol DLP Region
Calculate Dose →
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Thyroid

TI-RADS Calculator (ACR)

ACR TI-RADS thyroid nodule risk stratification. Score composition, echogenicity, shape, margin, and echogenic foci. Includes FNA guidance.

Composition Echogenicity Shape Margin Foci
Calculate TI-RADS →
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Prostate

PI-RADS v2.1 Calculator

Prostate MRI risk stratification per PI-RADS v2.1. Score T2W, DWI, DCE by zone. Get overall assessment category and biopsy guidance.

Zone (PZ/TZ) T2W DWI DCE
Calculate PI-RADS →
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Vascular

Wells Score (DVT)

Pre-test probability for deep vein thrombosis. Score 9 clinical criteria to guide D-dimer vs. ultrasound decision per evidence-based guidelines.

9 Criteria Risk Category Workup
Calculate Wells DVT →
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Pulmonology

Wells Score (PE)

Pre-test probability for pulmonary embolism. 2-level and 3-level stratification with CTPA vs. D-dimer workup recommendation.

7 Criteria 2-Level 3-Level
Calculate Wells PE →
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Cardiology

CHA₂DS₂-VASc Score

Stroke risk in non-valvular atrial fibrillation. Calculate annual stroke risk percentage and get anticoagulation recommendation per AHA/ACC 2023 guidelines.

CHF HTN Age Stroke Hx
Calculate CHA₂DS₂-VASc →
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Hepatology

MELD Score (+ MELD-Na)

Model for End-Stage Liver Disease. Calculate MELD and MELD-Na scores with 90-day mortality estimates and transplant listing context.

Bilirubin INR Creatinine Sodium
Calculate MELD →
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Hepatology

Child-Pugh Score

Hepatic function classification for cirrhosis. Get Child-Pugh class A/B/C with 1-year and 2-year survival estimates and perioperative mortality risk.

Albumin Bilirubin Ascites INR
Calculate Child-Pugh →

Why RadCalc?

Built specifically for the clinical workflow.

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Evidence-Based

Every calculator references the published guideline (KDIGO, ACR, ICRP, PI-RADS v2.1).

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Mobile-First

Designed for one-handed use on rounds. No pinch-zoom, no clunky tables.

Instant

Results update as you type. No submit buttons, no loading spinners.

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No Data Stored

All calculations happen in your browser. We never see patient data.