Health calculators
342 calculators in 25 groups. Each one shows its formula, a worked example and its sources.
Addiction medicine 7
Alcohol 7
Army 4
Army calculators 1
Body measurements 28
- ABSI calculator
- Adjusted body weight calculator
- BAI calculator
- BMI calculator
- BMI calculator for kids
- BMI calculator for men
- BMI calculator for teens
- BMI weight change calculator
- BMI calculator for women
- Body fat calculator
- Body frame size calculator
- Body shape calculator
- Body roundness index calculator
- Body surface area calculator
- Draw length calculator
- Bedridden patient height calculator
- Fat-free mass index calculator
- Geriatric BMI calculator
- Ideal weight calculator
- Karvonen formula calculator
- Lean body mass calculator
- Overweight calculator
- Ponderal index calculator
- Relative fat mass calculator
- Skinfold body fat calculator
- Waist-to-height ratio calculator
- Waist-to-hip ratio calculator
- Weight loss percentage calculator
Cardiovascular system 38
- 6-minute walk test calculator
- Ankle-brachial index calculator
- Aortic valve area calculator
- Arterial age calculator
- Blood pressure calculator
- Cardiac index calculator
- Fick cardiac output calculator
- Cerebral perfusion pressure calculator
- CHA₂DS₂-VASc calculator
- 10-year cardiovascular disease risk calculator
- DAPT score calculator
- Doppler echo cardiac output calculator
- Duke treadmill score calculator
- ECG boxes to seconds calculator
- ECG heart rate calculator
- Ejection fraction calculator
- EROA mitral regurgitation calculator
- Framingham hard coronary risk calculator
- Gorlin formula calculator
- HAS-BLED calculator
- HEART score calculator
- ICH volume calculator
- Left ventricular mass index calculator
- Mean arterial pressure calculator
- Gupta MICA risk calculator
- Mitral valve area calculator
- Padua score calculator
- PERC calculator
- PISA calculator
- Pulmonary vascular resistance calculator
- QTc calculator
- Rate pressure product calculator
- Revised Cardiac Risk Index calculator
- Revised Geneva score calculator
- Stroke volume calculator
- TIMI score for STEMI calculator
- TIMI score for UA/NSTEMI calculator
- Wells score for pulmonary embolism calculator
Diabetes 8
Diet and nutrition 34
- BEE calculator
- BMR calculator
- Harris-Benedict calculator
- Katch-McArdle calculator
- Caffeine calculator
- Calorie calculator
- Calorie deficit calculator
- Carbohydrate calculator
- Diet risk score calculator
- DRI calculator
- EER calculator
- Fat intake calculator
- Fibre calculator
- Gastric sleeve weight loss calculator
- IIFYM calculator
- Keto calculator
- Macro calculator
- Maintenance calorie calculator
- Meal calorie calculator
- Micronutrient calculator
- Net carbs calculator
- Protein intake calculator
- Quarantine activity calculator
- RMR calculator
- Simple calorie intake calculator
- Sodium in salt calculator
- Added sugar intake calculator
- TDEE calculator
- Vitamin calculator
- Vitamin A calculator
- Vitamin D calculator
- Water intake calculator
- Weight gain calculator
- Weight Watchers points calculator
Digestive system 9
Dosage 5
Electrolytes & fluids 21
- Acid-base calculator
- Anion gap calculator
- Arterial blood pH calculator
- Bicarbonate deficit calculator
- Total body water calculator
- Corrected calcium calculator
- Corrected magnesium calculator
- Drip rate calculator
- Drops per minute calculator
- IV flow rate calculator
- Parkland formula calculator
- Plasma osmolality calculator
- Serum osmolality calculator
- Sodium change in hypertriglyceridaemia calculator
- Sodium correction calculator
- Sodium correction rate calculator
- Sodium deficit calculator
- Urine anion gap calculator
- Venous blood pH calculator
- Free water deficit calculator
- Winters' formula calculator
Epidemiology 10
Geriatric medicine 8
Hematology 27
- 4Ts score calculator
- Age-adjusted D-dimer calculator
- Albumin globulin ratio calculator
- ANC calculator
- ANC calculator without bands
- Blood donation due date calculator
- Blood donor compatibility calculator
- Allowable blood loss calculator
- Blood type inheritance calculator
- Blood volume calculator
- Corrected reticulocyte count calculator
- DIC syndrome calculator
- Diffuse large B-cell lymphoma prognosis calculator
- Absolute eosinophil count calculator
- Fresh frozen plasma dose calculator
- Hematocrit to hemoglobin ratio calculator
- INR calculator
- Iron deficiency calculator
- Absolute lymphocyte count calculator
- Mentzer index calculator
- MIPI calculator
- mmol/L to mg/dL calculator
- NLR calculator
- Plasma volume calculator
- RBC indices calculator
- Absolute reticulocyte count calculator
- Transferrin saturation calculator
Intensive & emergency care 16
- Alvarado score calculator
- APACHE II score calculator
- GCS calculator
- ICH score calculator
- Injury severity score calculator
- LRINEC score calculator
- MEWS score calculator
- NEDOCS calculator
- NIH stroke scale calculator
- qSOFA score calculator
- Revised trauma score calculator
- SAPS II score calculator
- SCORAD calculator
- Sepsis-3 criteria calculator
- Shock index calculator
- SOFA score calculator
Metabolic disorders 7
Other 13
- Aldrete score calculator
- BASDAI score calculator
- Beighton score calculator
- Berg balance test calculator
- Hot car calculator
- Modified Centor score calculator
- DASI calculator
- Dog walking benefits calculator
- EASI score calculator
- Fatigue Severity Scale calculator
- Free testosterone calculator
- Noise exposure time calculator
- Pokémon GO walking calculator
Pediatric 13
- Adjusted age calculator
- Apgar score calculator
- Baby formula calculator
- Baby’s milk intake calculator
- Exclusive pumping calculator
- Glucose infusion rate calculator
- Height calculator
- Maintenance fluids for children calculator
- PECARN head injury calculator
- Pediatric blood pressure percentile calculator
- Pediatric blood volume calculator
- Pediatric GFR calculator
- Pediatric red cell transfusion volume calculator
Percentile 6
Pregnancy and fertility 30
- Birth control cost calculator
- Bishop score calculator
- BMI in pregnancy calculator
- Breastfeeding calorie calculator
- Conception date calculator
- Crown-rump length calculator
- Estimated date of delivery calculator
- Flange size calculator
- Fundal height calculator
- Gestational age calculator
- hCG levels calculator
- Implantation calculator
- IVF due date calculator
- Luteal phase calculator
- Mean sac diameter calculator
- Ovulation calculator
- Pearl index calculator
- Period calculator
- Progesterone to estradiol ratio calculator
- Pregnancy due date calculator
- Pregnancy test calculator
- Pregnancy weight gain calculator
- Reverse due date calculator
- Sperm analysis calculator
- Testosterone to estradiol ratio calculator
- Twin pregnancy weight gain calculator
- Urine pregnancy test timing calculator
- VBAC probability calculator
- Pregnancy VTE risk score calculator
- Pregnancy weight gain week by week calculator
Psychiatry & psychology 2
Pulmonary 17
- A-a gradient calculator
- BODE index calculator
- CURB-65 calculator
- Dead space calculator
- Endotracheal tube size calculator
- FEV1/FVC ratio calculator
- Light's criteria calculator
- Lung capacity calculator
- Mean airway pressure calculator
- Oxygenation index calculator
- PaO2/FiO2 ratio calculator
- Peak flow calculator
- Pneumonia severity index calculator
- Qp/Qs ratio calculator
- Rapid shallow breathing index calculator
- Tidal volume calculator
- Vital capacity calculator
Radiology 2
Sleep 10
Urology & nephrology 19
- Albumin creatinine ratio calculator
- Adrenal washout calculator
- Bladder volume calculator
- BUN creatinine ratio calculator
- Creatinine clearance calculator
- EORTC bladder cancer risk calculator
- FENa calculator
- FEUrea calculator
- GFR calculator
- Kidney failure risk calculator
- Kidney STONE calculator
- Kt/V calculator
- Prostate volume calculator
- Protein creatinine ratio calculator
- PSA density calculator
- PSA doubling time calculator
- TTKG calculator
- Urine output calculator
- URR calculator