MedCalX

Medical Calculator

MedCalX is a medical calculator for iOS that gives you easy access to complicated medical formulas, scores, scales and classifications.

Born Mobile

MedCalX has been available on mobile platforms for over 15 years, leveraging years of experience in bringing medical equations to physicians in a clear, yet powerful format. You will enjoy the refined interface, carefully crafted for mobile devices, that gets out of your way but supports you in those critical moments.

Focused

  • A large selection of relevant formulas, scores, scales and classifications
  • Detailed information and bibliographic references for each formula
  • Support for multiple SI and US units, with easy switching from the keypad
  • Customizable list of favorite equations
  • Access equations by name, categories and keywords
  • Many ways to share formula results (email, print, copy to clipboard)
  • Exclusive patient management features for saving, accessing and sharing results
  • Available in English, French, German, Portuguese, Spanish and soon Chinese

Get MedCalX

A comprehensive collection of formulas, scores and classifications

Free formulas and scores

Every entry in this list is fully functional upon free App download

  • A-a O₂ Gradient and Ratio
  • ABCD² Score
  • Absolute Neutrophil Count
  • Age
  • Angina Scale (CCS)
  • Anion Gap (Urine)
  • APGAR
  • ASA Classification
  • ASIA Impairment Scale
  • AVPU Scale
  • Balthazar Scale
  • Basal Energy Expenditure
  • Bicarbonate Deficit
  • Body Mass Index
  • Borg CR10 Scale
  • Borg Scale
  • Bristol Stool Chart
  • Bromage Scale
  • Bromage Scale (Modifed by Breen)
  • BSAS
  • Burn Area (rule of nines)
  • Canadian CT Head Rule
  • Cardiac Output (Echo)
  • Cardiac Valve Area (Gorlin)
  • CHADS₂ Score
  • Child-Pugh Classification
  • Cormack Classification
  • Corrected Ca (Protein)
  • Corrected Na (Glucose)
  • Correction of hypo/hypernatremia
  • CURB-65 Score
  • Delta PP
  • Dermatome Map
  • Dyspnea Scale (MRC)
  • Epworth Sleepiness Scale
  • EuroSCORE
  • Expected PCO₂ (Winters)
  • Eye Chart (Snellen)
  • Fisher Scale
  • Forrest Classification
  • Fractional Excretion of Na (FENa)
  • Geneva Score for PE
  • GFR (Cockcroft-Gault)
  • GFR (Creatinine measured)
  • Glasgow Coma Scale
  • Glasgow Outcome Scale
  • GOLD Classification
  • Heart Rate (EKG)
  • Henderson-Hasselbalch
  • Hunt-Hess Scale
  • Infusion Management
  • Infusion: IV Drip Rate
  • Interval calculator
  • Iron Deficit (Ganzoni)
  • KDIGO AKI Classification
  • Killip Classification
  • LDL Cholesterol
  • Light's Criteria
  • Liver Volume (Vauthey)
  • Mallampati Classification
  • Mean Arterial Pressure
  • MELD (MELD-Na) Score
  • Modified Dyspnea Scale (mMRC)
  • Modified Rankin Scale
  • Muscle Strength Scale (MRC)
  • NACA Scale
  • NEXUS II CT-Head Rule
  • NYHA Functional Classification
  • Odds ⇄ Probability
  • Osmolal Gap (Serum)
  • Ottawa Knee Rule
  • O₂ Tank Remaining Time
  • Pack Years Calculator
  • Pain Visual Scale
  • PaO₂ / FiO₂ Ratio
  • PERC
  • Performance Status (Karnofsky)
  • Performance Status (Zubrod)
  • Peritonitis Classification (Hinchey)
  • Plasma Volume
  • Post-test Probability (LR)
  • Post-test Probability (Sn/Sp)
  • Q-Tc
  • Ramsay Sedation Scale
  • Richmond Agit. Sed. Scale
  • RIFLE Classification
  • Rudkin Sedation Scale
  • Rutgeerts Classification
  • Sedation-Agitation Scale
  • Serum-Ascites Albumin Gradient
  • SIRS Criteria
  • SMART-COP Score
  • Target Height
  • Teeth Numbering
  • Tidal Volume (ARDSnet)
  • Two-Way Table
  • Units Conversion (Chem.)
  • Units Conversion (Physics)
  • Vascular Resistances
  • Warfarin Dosing
  • Wells Score for DVT
  • West Haven Scale

Unlocked by In-App Purchase

  • 4T's HIT Score
  • 6-Minute Walk Test Distance
  • Abbreviated Burn Severity Index
  • Abbreviated Mental Test
  • ABCD³-I Score
  • ABG Analyzer
  • ABIC Score
  • ADO Index
  • Age-adjusted D-dimer Cutoff
  • Allowable Blood Loss
  • Alvarado Score
  • Anion Gap (Serum)
  • Ankle Brachial Pressure Index
  • APACHE II
  • Aphasia Classification
  • APRI Score
  • ATRIA Score
  • Balthazar CT Index (Modified)
  • Balthazar CT Severity Index
  • Barthel Index
  • Basal Metabolic Rate
  • BATiC Score
  • Behavioral Pain Scale
  • BISAP Score
  • Bishop Score
  • BODE Index
  • BODEx Index
  • Body Surface Area
  • Body Weights
  • CAM-ICU
  • Canadian C-Spine Rule
  • Candida Score
  • CAP PIRO Score
  • Cardiac Output (Fick)
  • Cardiovascular Risk (ACC/AHA)
  • CATCH Rule
  • CDAI
  • Centor and McIsaac (Scores)
  • Charlson Comorbidity Index
  • CHA₂DS₂-VASc Score
  • Cincinnati Prehosp. Stroke Scale
  • CIWA-Ar Scale
  • Corrected Ca (Albumin)
  • Corrected Na (Lipids)
  • Corrected Na (Protein)
  • Corrected Phenytoin (Albumin)
  • CPIS
  • CPOT
  • CRB-65 Score
  • CRUSADE Score
  • CVC Optimal Positioning
  • Daniel's ECG score for PE
  • Delta Gap and Ratio
  • Detsky (Modified) Index
  • Disease Activity Scores
  • Duke Criteria (modified)
  • Eckardt Score
  • Endotracheal Tube Size (Ped)
  • EuroSCORE II
  • Expected Bowel Length
  • FIB-4 Score
  • FLACC Score
  • Fluid Repletion For Burns
  • FOUR Coma Score
  • Fractional Excretion of Ca (FECa)
  • Fractional Excretion of Mg (FEMg)
  • Fractional Excretion of Urea (FEUr)
  • Framingham CHD Risk (ATP III)
  • Geneva Prognostic Score for PE
  • GFR (CKD-EPI)
  • GFR (MDRD)
  • GFR (Salazar-Corcoran)
  • GFR (Schwartz)
  • Glasgow Coma Scale (Ped)
  • Glasgow EtOH Hep. Score
  • Glasgow Scoring System
  • Glasgow-Blatchford Score
  • Goldman (Multifactorial) Index
  • Gouty Arthritis Diagnostic Rule
  • GRACE Score
  • Growth Velocity
  • Harvey Bradshaw Index
  • HAS-BLED Score
  • HbA1c Converter
  • HEART Score
  • HEMORR₂HAGES Score
  • Hepatitis Discriminant Fx
  • Hestia Criteria
  • High-Risk Alcoholism Relapse Score
  • HOMA-IR
  • In-Flight PaO₂ Estimation
  • Infusion: Rule of Six
  • Injury Severity Score
  • ISTH DIC (non overt)
  • ISTH DIC (overt)
  • Jones Criteria (revised)
  • Katz Scale
  • Khorana Score
  • Kocher Criteria
  • Kt/V (URR)
  • Lee (Revised) Score
  • Likelihood Ratios
  • Lille Model
  • LRINEC Score
  • Lung Age
  • Maintenance Fluid (children)
  • Malinas Score
  • Mannheim Peritonitis Index
  • Marshall Scoring System
  • MASCC Score
  • MEES
  • MEWS
  • Microalbuminuria
  • Murray Lung Injury Score
  • NAFLD Fibrosis Score
  • New Orleans Criteria
  • NEXUS C-Spine Rule
  • NIH Stroke Scale
  • Norton Scale
  • Number Needed To Treat
  • OBRI Score
  • Osmolal Gap (Stool)
  • Ottawa Ankle Rules
  • Ottawa SAH Rule
  • Oxygen Index
  • O₂ Transport Parameters
  • Padua Prediction Score
  • PECARN Algorithm
  • Pediatric Trauma Score
  • PELD Score
  • Peritonitis Severity Score
  • PESI
  • PESI (simplified)
  • Physical Working Capacity
  • Pisa Model for PE
  • Pneumonia Severity Index
  • POSSUM and P-POSSUM Scores
  • PRAM Score
  • Predicted Height
  • Predicted Peak Flow (Adults)
  • Pregnancy Wheel
  • PREP Score for PE
  • Pressure Gradient
  • PROCAM Score
  • Protein Excretion
  • Qp:Qs
  • qSOFA
  • Ranson's Score
  • Rapid Shallow Breathing Index
  • Red Blood Cell Indices
  • Renal Failure Index (RFI)
  • Reticulocyte Index
  • Revised Trauma Score
  • RIETE Score
  • Rockall Score
  • ROSIER Scale
  • Saline Solution
  • Sample Size
  • San Francisco Syncope Rule
  • SAPS II
  • Septic Shock (Sepsis-3)
  • Shock Index
  • Silverman-Anderson
  • SLEDAI
  • SMRT-CO Score
  • SOFA Score
  • Solitary Nodule Assessment
  • Spirometric Values
  • STEMI EKG Index
  • STOP BANG Screening Tool
  • TASH Score
  • Thoracoscore
  • TIMI Score (NSTEMI)
  • TIMI Score (STEMI)
  • Transferrin Saturation
  • Transtubular K Gradient
  • Tubular Phosphate Reabsorption
  • Umbilical Line Placement
  • Urinary Excretion of Ca
  • Urine Output
  • VAP PIRO Score
  • VO₂ (estimated)
  • Water Deficit
  • Wells Score for PE (2-level)
  • Wells Score for PE (original)
  • Westley Croup Score
  • WETFAG
  • WFNS SAH Grade

Something Missing?

Are you missing a formula that you rely on? Can't find a scale that would be handy to have? Let us know!

The people behind MedCalX

Design

MedCalX is developed by Pascal Pfiffner and Mathias Tschopp, two Medical Doctors who believe you shouldn't be able to recognize medical software by their lousy user interface.

Localization

The following people have contributed to our localization efforts:

  • French: Dr. Mathias Tschopp; Marc-Emile Plourde MD, FRCPC
  • German: Dr. Pascal Pfiffner
  • Portuguese: Dr. Jairon Carvalho Moura
  • Simplified Chinese: Hongyang NI
  • Spanish: Dr. Rodolfo Marín Briones; MD. Ariel Joel Hdez Viveros; Antonio Martin Marco; Eliseo Rodriguez Claus, MD; Juan Pablo Piombo - MD; Dr. Iñaki Martinez de Ilarduya Muñoz; José María Pérez Ramos

Artwork


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