Up-to-date decision support for GP registrars and clinicians. Australian guidelines, current evidence, designed for the point of care. Free, fast, no sign-in.
Shared care decision support across the pregnancy timeline — risk stratification, scan windows, GDM and anti-D protocols, with a consultation note generator.
ContraceptionEligibility checking for combined hormonal contraception, POP, DMPA, implant and IUD across the full spectrum of clinical conditions.
HepatologyPattern recognition for hepatocellular vs cholestatic injury with built-in FIB-4, severity grading, and investigation pathways.
EndocrineCriteria-based diagnosis using waist circumference, BP, glucose, triglycerides and HDL — with cardiovascular risk implications.
Preventive HealthRACGP-aligned risk stratification for breast, cervical, bowel, lung, prostate and skin cancer — average, moderate and high-risk pathways.
RespiratoryAge-stratified action plan generator with green/orange/red zone management, dosing for under-6s, 6–11 and adults, and the 4×4×4 emergency rule.
Clinical guidelines change. Calculators on hospital intranets get out of date. The good tools sit behind logins, or assume you're a specialist, or weren't designed for Australian practice.
GP Calc is an attempt to fix that — a small, opinionated collection of decision support tools aligned with current Australian guidelines, designed for the way GPs actually work: in a hurry, on a phone, between consultations.
Every tool is dated. Every tool cites its sources. Every tool is free.
GP Calc provides clinical decision support intended for use by qualified healthcare professionals. It is not a substitute for clinical judgement and does not establish a doctor–patient relationship. Always verify results against current guidelines and adapt to the individual patient. Tools are reviewed regularly but guidelines evolve — check the "last updated" date on each calculator before use.