MedCalc

MedNerd

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About this app

MedCalc puts 890+ evidence-based clinical calculators and medical scores in your pocket — and every one of them works completely offline.

Built for clinicians who need the right number at the bedside, not a loading spinner.


WHY CLINICIANS CHOOSE IT

• Genuinely offline — every calculation runs on your device. No internet, no account, no sign-up.
• Live results — scores update the instant you tap a criterion or type a value. There is no "Calculate" button.
• Never a black box — each result comes with interpretation, suggested actions, and the citation behind it.
• Fast to find — search by calculator name, abbreviation, disease, symptom or specialty, or jump with the A–Z index.


890+ CALCULATORS ACROSS 21 SPECIALTIES

Cardiology · Emergency Medicine · Critical Care · Nephrology · Neurology · Pulmonology · Gastroenterology · Hepatology · Hematology · Oncology · Endocrinology · Infectious Disease · Obstetrics & Gynaecology · Paediatrics · Psychiatry · Rheumatology · Surgery · Anaesthesiology · Toxicology · Geriatrics · Dermatology

Including the scores you reach for every shift: CHA₂DS₂-VASc, HAS-BLED, Wells (DVT/PE), CURB-65, qSOFA, APACHE II, GCS, NIHSS, MELD-Na, Child-Pugh, HEART Score, Cockcroft-Gault, MDRD, CKD-EPI, Parkland, Ranson, BISAP, Centor, PERC, TIMI, Framingham, Glasgow-Blatchford, RCRI, STOP-BANG, Ottawa rules, and hundreds more.


CLINICAL CONTEXT, NOT JUST A NUMBER

• Interpretation bands with severity colours
• Suggested actions and management algorithms mapped to the result
• Strengths and limitations for every score — know when NOT to use it
• Source citations with PMID and evidence grading
• Endorsing bodies (ESC, AHA, ACC, ACOG, CHEST, NICE and more)
• Linked calculators — jump straight from CHA₂DS₂-VASc to HAS-BLED


BUILT FOR REAL BEDSIDE USE

• Metric ⇄ Imperial switching on labs and measurements — mg/dL ⇄ µmol/L, kg ⇄ lb, cm ⇄ ft/in, °C ⇄ °F. Conversions are applied inside the formula, not just to the label.
• Live running totals on criteria scores, so partial answers still tell you something
• Favourites and curated clinical collections (ICU, sepsis, stroke, AF workups)
• Visual aids: Bristol stool scale, Wong-Baker FACES, Snellen chart, CDC growth charts, paediatric BP percentiles (AAP 2017)
• Haptic feedback on every input, with a toggle if you prefer it off
• Light and dark mode
• Sticky result bar that stays visible while you scroll


PRIVACY BY DESIGN

No patient data is stored, transmitted or shared. No analytics on your inputs. No account required. Everything stays on your device — which is exactly what you want when you are calculating at the bedside.


WHO IT IS FOR

Physicians, residents, medical students, nurses, nurse practitioners, physician assistants, paramedics, pharmacists — anyone who needs reliable clinical calculations at the point of care.


IMPORTANT

MedCalc is a clinical decision-support tool for qualified healthcare professionals. Results are intended to complement clinical judgement, not replace it. Always interpret any score in the full clinical context of your patient. This app does not diagnose, treat or prescribe.