Numbers that matter.

Ankle-brachial index calculator: ABI = ankle systolic pressure ÷ the higher brachial pressure — how the ratio works a...

Absolute neutrophil count calculator: ANC = WBC × (segs% + bands%) ÷ 100 — turn a CBC differential into cells per mic...

Calculate alvarado with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score the five Apgar signs for a newborn and get the total, the A-P-G-A-R summary and the AAP/ACOG category. Clinical...

Calculate barthel index with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate braden score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score CHA₂DS₂-VASc stroke risk in atrial fibrillation, or the sexless CHA₂DS₂-VA variant introduced by the 2024 ESC g...

Score CURB-65 severity for community-acquired pneumonia from confusion, urea, respiratory rate, blood pressure and ag...

Calculate frailty index with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate framingham risk with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score the Glasgow Coma Scale from eye, verbal and best motor response. Reports the total, the E-V-M summary and the T...

Calculate heart score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate mews score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate shock index from heart rate divided by systolic blood pressure measured at the same assessment with explici...

Score the Wells criteria for deep-vein thrombosis. Choose the modified 2003 likely/unlikely model or the original 199...

Calculate 4ts score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate audit test with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate absolute eosinophil count from total white-cell count and the laboratory-reported eosinophil percentage wit...

Absolute lymphocyte count calculator: ALC = WBC × lymphocyte% ÷ 100 turns a CBC percentage into cells per microlitre,...

Calculate absolute reticulocyte count from red-cell count and reticulocyte percentage in matched per-microlitre units...

Calculate urine albumin-to-creatinine ratio from albumin in mg/L and creatinine in g/L without adding a disease categ...

Calculate aldrete score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate arm-span-to-height ratio with the same-unit measurements, reported without a performance or health category...

Calculate bode index with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate original body roundness index geometry from waist circumference and height measured in the same length unit...

Score the five Bishop components — dilation, effacement, station, consistency and position — with the −3 to +3 statio...

Charlson Comorbidity Index calculator: tally 1-, 2-, 3-, and 6-point conditions plus age points into the CCI score us...

Score the Centor criteria for sore throat, or the McIsaac modification that adds a signed age term. The two scales ha...

Score Child-Pugh class from bilirubin, albumin, INR, ascites, and encephalopathy for cirrhosis severity documentation.

Calculate corrected reticulocyte percentage from reported reticulocyte percentage, patient hematocrit, and an explici...

Calculate dasi with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate duke score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

EASI score calculator: combines area and severity grades for head, trunk, arms, and legs with the adult regional weig...

Calculate gi with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score HAS-BLED bleeding risk in atrial fibrillation and see how much of the score comes from modifiable factors. A hi...

Calculate hsi with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate arithmetic ratio of a reported hematocrit percentage to a reported hemoglobin concentration in g/dL with ex...

Calculate ich with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate iss with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate lights criteria with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate classic MELD-Na from bilirubin, INR, creatinine, sodium, and dialysis adjustment for documented clinical sc...

Calculate Mentzer index arithmetic from mean corpuscular volume and red-cell count in the original unit convention wi...

Calculate nafld fibrosis score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score the full 15-item NIH Stroke Scale, or the published sNIHSS-8 and sNIHSS-5 shortened scales. Severity bands appl...

Calculate oxygenation index from fractional inspired oxygen, mean airway pressure, and arterial oxygen pressure with ...

Check all eight PERC criteria for pulmonary embolism. Valid only when the pretest probability is already judged low. ...

Calculate rapid shallow breathing index from respiratory frequency divided by tidal volume expressed in litres with e...

Calculate revised geneva score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate revised trauma score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate saps ii with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Score all six SOFA organ systems from labs and organ support, see the component breakdown, and check the Sepsis-3 2-p...

Score the seven Wells criteria for pulmonary embolism. Returns the original weighted total with two-level and three-l...

Score the three qSOFA criteria — respiratory rate, systolic pressure and altered mentation. Not a sepsis screening to...

Calculate basdai with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate cdai with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate finnegan nas with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate lrinec score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate lille score with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate mica with a sourced formula, guarded inputs, a worked example, and clearly stated scope.

Calculate mipi with a sourced formula, guarded inputs, a worked example, and clearly stated scope.