Health calculators

Screening tools, body metrics, and calorie math you can trust.

BMI, body fat, BMR, and other health screening tools — clearly labelled as informational rather than diagnostic, with citations for each formula.

Calculators
56
Topics: All Body Metrics (56) Calories (14)
56 results
Health / Body Metrics

Drug Loading Dose Calculator

Compute the loading dose required to immediately reach a target steady-state plasma concentration, given the apparent vo...

basic
21,528 4.5 1 min
Health / Body Metrics

Nadler Blood Volume Calculator

Estimate the total blood volume in litres for an adult using the Nadler formula, which uses height (in metres) and body...

basic
19,716 4.7 1 min
Health / Body Metrics

BMI Calculator

Estimate BMI from height and weight in either metric or imperial units, with WHO classification.

Featured Trending basic
22,355 4.6 1 min
Health / Body Metrics

HEART Score Calculator

Compute the HEART score for chest pain in the emergency department from history, ECG, age, risk factors, and troponin. E...

basic
10,675 4.2 1 min
Health / Body Metrics

NIHSS Total Calculator

Sum the eleven NIH Stroke Scale items into the total NIHSS score and assign a severity band: 0 no stroke; 1–4 minor; 5–1...

basic
15,435 4.6 1 min
Health / Body Metrics

APGAR Score Calculator

Compute the APGAR score for a newborn from the five sub-scores (Appearance, Pulse, Grimace, Activity, Respiration), each...

basic
12,337 4.8 1 min
Health / Body Metrics

Glasgow Coma Scale Calculator

Compute the Glasgow Coma Scale (GCS) total from the eye-opening (1-4), verbal (1-5), and motor (1-6) sub-scores, with se...

basic
9,602 4.2 1 min
Health / Body Metrics

Wells DVT Score Calculator

Compute the Wells score for deep vein thrombosis (DVT) — a 9-item pretest probability score where +1 is added per positi...

basic
6,304 4.6 1 min
Health / Body Metrics

MELD Score Calculator

Compute the original Model for End-Stage Liver Disease (MELD) score from serum creatinine, total bilirubin, and INR. Use...

basic
10,098 4.2 1 min
Health / Body Metrics

ABCD2 Score Calculator

Compute the ABCD² score for early stroke risk after a transient ischemic attack (TIA) from age, blood pressure, clinical...

basic
13,047 4.6 1 min
Health / Body Metrics

Corrected Calcium Calculator

Adjust a measured serum calcium for a low or high serum albumin, since most circulating calcium is bound to albumin.

basic
14,903 3.8 1 min
Health / Body Metrics

eGFR (CKD-EPI 2021) Calculator

Compute the estimated glomerular filtration rate (eGFR) using the 2021 race-free CKD-EPI creatinine equation, from serum...

basic
1,902 4.5 1 min
Health / Body Metrics

QTc (Bazett) Calculator

Compute the corrected QT interval (QTc) using the Bazett formula QTc = QT / √RR. Uses RR derived from heart rate (RR sec...

basic
6,907 3.9 1 min