Free clinical tools, calculators & AI assistants

Citation-first calculators and AI helpers for clinicians, residents, and medical students. Every tool grounds its output in a named guideline, FDA label, or peer-reviewed source you can verify before acting.

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This tool is for educational and decision-support use only. It does not replace independent clinical judgement. Always verify against the current guideline, FDA label, or specialty reference cited below before acting. Do not enter patient identifiers (name, MRN, dates of service).

Clinical Risk Calculators

Bedside risk-stratification tools rooted in cited specialty guidelines.

CHA₂DS₂-VASc Calculator

Non-valvular AF stroke risk score with annual event rates.

HAS-BLED Calculator

Major bleeding risk score for anticoagulated AF patients.

Wells' Criteria for PE

Pre-test probability of PE (two-tier and three-tier bands).

CURB-65 Calculator

CAP severity + disposition decision aid.

MELD-Na Calculator

MELD-Na (UNOS 2016) with dialysis + sodium handling.

NIH Stroke Scale (NIHSS) Calculator

NIHSS item-by-item scoring + severity band.

TIMI Risk Score (UA/NSTEMI)

14-day event risk in UA/NSTEMI.

Lab & Dosing Calculators

Common laboratory and renal/hepatic dose adjustments aligned with FDA labels and KDIGO.

eGFR Calculator (CKD-EPI 2021)

CKD-EPI 2021, race-free eGFR.

Creatinine Clearance (Cockcroft-Gault)

Cockcroft-Gault CrCl for drug-dosing adjustments.

Corrected Calcium Calculator

Albumin-adjusted serum calcium.

Anion Gap + Delta Ratio Calculator

Anion gap + albumin-corrected AG + delta ratio.

Opioid MME Calculator

Total daily MME across multiple opioids (CDC 2022).

Pediatric Weight-Based Dose Calculator

Weight × mg/kg pediatric dosing with max-dose warning.

Differential & Diagnostic AI

Citation-first AI helpers that organise clinical reasoning and surface what to verify.

Differential Diagnosis Generator

Ranked Ddx with workup + can't-miss diagnoses.

Lab Abnormality Interpreter

Common causes + workup + red flags for any abnormal lab.

Empiric Antibiotic Therapy Lookup

First-line + alternatives for common infection sites.

ECG Findings Interpreter

Text-in ECG interpretation framework (not image reading).

Pharmacology & Drug Info

Drug-interaction, renal/hepatic dosing, and pregnancy/lactation lookups.

AI Drug Interaction Checker

Structured DDI checks with verification references.

Renal / Hepatic Dose Adjustment Lookup

eGFR / Child-Pugh dose-adjustment bands for any drug.

Pregnancy & Lactation Safety Lookup

PLLR + LactMed narrative summary for any drug.

Board Prep & Education

USMLE-style vignettes, high-yield topic summaries, and SOAP-note teaching tools.

USMLE Vignette Generator

Topic → one vignette + 5 options + explanation.

High-Yield Topic Summary

Structured board-style summary for any clinical topic.

Pharm Mechanism Explainer

Drug or class → MoA + SE + board pearls + sources.

SOAP Note Organiser (Educational)

Rough notes → clean SOAP structure for teaching.

Reference & Comparison

How Rounds compares to UpToDate, OpenEvidence, and general-purpose AI for clinical use.

Rounds vs UpToDate

Conversational cited answers vs long-form reference.

Rounds vs OpenEvidence

Citation-first clinical AI — differentiation and workflow fit.

Rounds vs ChatGPT for Medical Questions

Why citation-first clinical AI beats general-purpose chat.

How Rounds tools differ from MDCalc

MDCalc is the leading clinical-calculator reference and remains best in class for breadth. Rounds tools are designed for a different workflow: they pair the calculator with the structured clinical reasoning a learner or busy clinician needs — intro, FAQ, cited guideline, and a one-click prompt to ask Rounds AI for a grounded clinical answer.