Renal & Nephrology
Kidney FunctioneGFR Calculator (CKD-EPI 2021)
Estimates glomerular filtration rate using the race-free CKD-EPI 2021 creatinine equation with KDIGO stage classification per 2022 guidelines. Accepts mg/dL or µmol/L.
Use Calculator →CrCl Calculator (Cockcroft-Gault)
Creatinine clearance with IBW/ABW adjustment, contrast volume ceiling using the 5×CrCl rule, 4-tier nephrotoxicity risk panel, and metformin hold guidance.
Use Calculator →Kidney Volume Calculator
Renal volume by ellipsoid formula. Total kidney volume (TKV) and height-adjusted TKV (HtTKV) for ADPKD staging per Mayo Clinic Image Class criteria.
Use Calculator →Anion Gap Calculator
Serum AG from BMP with albumin-corrected Figge correction, delta-delta ratio for mixed acid-base disorders, MUDPILES panel, and color-coded severity 8–12 / 13–16 / 17–24 / >24.
Use Calculator →Cardiology
Cardiovascular RiskHEART Score
Chest pain risk stratification in the ED. Estimates 6-week MACE risk and guides admission vs early discharge decisions.
Use Calculator →ASCVD Risk Score (Pooled Cohort)
10-year atherosclerotic cardiovascular disease risk for primary prevention. Race- and sex-specific equations per ACC/AHA 2013 guidelines.
Use Calculator →CHA₂DS₂-VASc Score
Stroke risk in non-valvular atrial fibrillation. Annual stroke risk estimate with anticoagulation recommendation per AHA/ACC 2023 guidelines.
Use Calculator →TIMI Risk Score
7 binary factors, 0–7 score, 4 risk tiers with 14-day mortality and ischemic event rates. DAPT guidance included.
Use Calculator →Calcium Score (Agatston)
Coronary artery calcium quantification and cardiovascular risk stratification from non-contrast cardiac CT. Percentile-based risk classification by age and sex.
Use Calculator →A-a Gradient Calculator
Alveolar-arterial oxygen gradient via the alveolar gas equation with age-adjusted normal values, a/A ratio, P/F ratio, and color-coded hypoxemia severity.
Use Calculator →Pulmonary & Critical Care
RespiratoryCURB-65 Score
Community-acquired pneumonia severity. Stratifies patients for outpatient vs inpatient management with 30-day mortality estimates per BTS guidelines.
Use Calculator →PSI / PORT Score
Pneumonia Severity Index for community-acquired pneumonia. Two-step risk stratification yields Class I–V with 30-day mortality guidance.
Use Calculator →Wells Score (PE)
Pre-test probability for pulmonary embolism. 2-level and 3-level stratification with CTPA vs D-dimer workup recommendation.
Use Calculator →Revised Geneva Score
Objective PE risk stratification using 8 clinical criteria. 3-tier probability classification with D-dimer/CTPA decision guidance. No subjective judgment required.
Use Calculator →Fleischner Criteria Calculator
2017 Fleischner Society guidelines for incidental pulmonary nodule management. Follow-up recommendations by nodule type, size, and patient risk.
Use Calculator →Emergency & Neuro
Risk StratificationWells Score (DVT)
Pre-test probability for deep vein thrombosis. Score 9 clinical criteria to guide D-dimer vs ultrasound decision per evidence-based guidelines.
Use Calculator →NIH Stroke Scale (NIHSS)
15-item stroke severity assessment, 0–42 score, severity classification, and tPA/thrombectomy eligibility guidance for acute ischemic stroke.
Use Calculator →Glasgow Coma Scale (GCS)
Eye + Verbal + Motor scoring, severity classification, GCS-Pupils modifier, and intubation notation for ICU and ED use.
Use Calculator →qSOFA Score
Quick Sequential Organ Failure Assessment for rapid sepsis screening at the bedside. Identifies patients with suspected infection at high risk for poor outcome.
Use Calculator →Canadian C-Spine Rule
3-step decision tree for C-spine imaging clearance in alert trauma patients. 99.4% sensitivity for clinically significant cervical spine injury.
Use Calculator →Ottawa Ankle Rules
Decision tool for ankle and foot X-ray in acute trauma. High sensitivity for fracture. Reduces unnecessary imaging in the ED.
Use Calculator →Thyroid & Endocrinology
EndocrineHepatology
Liver DiseaseMELD Score (+ MELD-Na)
Model for End-Stage Liver Disease. Calculate MELD and MELD-Na scores with 90-day mortality estimates and UNOS transplant listing prioritization context.
Use Calculator →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 risk.
Use Calculator →Liver Volume Calculator
Hepatic volume by ellipsoid formula. Hepatomegaly thresholds with clinical context for surgical planning and transplant evaluation.
Use Calculator →Radiology — Reporting & Workflow
ImagingTI-RADS Calculator (ACR)
ACR TI-RADS thyroid nodule risk stratification. Score composition, echogenicity, shape, margin, and echogenic foci. Includes ACR-recommended FNA and follow-up size thresholds.
Use Calculator →BI-RADS Assessment (5th Ed.)
ACR BI-RADS Atlas, 5th Edition. Standardized breast imaging reporting and data system. Assessment categories 0–6 with management recommendations per ACR guidelines.
Use Calculator →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.
Use Calculator →CT Radiation Dose Calculator
Convert CTDIvol and DLP to effective dose in mSv using ICRP conversion factors. Compare against ACR Dose Index Registry benchmarks.
Use Calculator →wRVU Calculator
Radiology work RVU lookup by CPT code. Calculate total wRVUs and annualized projections for CT, MRI, X-ray, US, and IR procedures.
Use Calculator →General Medicine
ScreeningOrgan & Body Measurement
Ellipsoid FormulaOvary Volume Calculator
Calculate ovarian volume using the ellipsoid formula (L × W × H × 0.523). Normal ranges for premenopausal and postmenopausal women.
Use Calculator →Testicular Volume Calculator
Ellipsoid and Lambert formulas for testicular volume in mL. Adult reference range with atrophy and enlargement thresholds.
Use Calculator →Uterus Volume Calculator
Uterine volume by ellipsoid formula. Reference ranges by menopausal status and parity. Useful for fibroid monitoring.
Use Calculator →Spleen Volume Calculator
Splenic volume by ellipsoid formula. 4-tier splenomegaly classification: normal, mild, moderate, massive.
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