calculator · 1 min
Mean Arterial Pressure
Estimate MAP from systolic and diastolic blood pressure.
Emergency medicine
Medical calculators for clinicians
Calculate the number. See what it means.
Focused clinical calculators with the equation, required inputs, assumptions, references, and limits attached to every result.
Library status
015
live instruments · reviewed Aug 2026
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Common in the next five minutes
calculator · 2 min
QTc
Compare four heart-rate corrections for a measured QT interval.
Cardiology
calculator · 2 min
Creatinine Clearance
Estimate creatinine clearance with the Cockcroft-Gault equation.
Internal medicine
calculator · 2 min
Corrected Sodium
Adjust serum sodium for hyperglycemia with visible assumptions.
Emergency medicine
calculator · 1 min
Body Mass Index
Calculate BMI from height and weight with screening limits visible.
Primary care
calculator · 1 min
Anion Gap
Calculate the serum anion gap without potassium for acid–base assessment.
Internal medicine
calculator · 1 min
Body Surface Area
Estimate Mosteller BSA for medication and physiology references.
Internal medicine
calculator · 1 min
Pulse Pressure
Calculate the difference between systolic and diastolic pressure.
Cardiology
calculator · 1 min
Corrected Calcium
Adjust total calcium for albumin with the correction and its limits visible.
Internal medicine
calculator · 1 min
Serum Osmolality
Estimate calculated serum osmolality from sodium, glucose, and BUN.
Emergency medicine
calculator · 1 min
Absolute Neutrophil Count
Calculate ANC from white-cell count and differential percentages.
Hematology
calculator · 1 min
Medical Dosage by Weight
Convert a prescribed mg/kg dose into per-dose and daily arithmetic.
Medication safety
calculator · 1 min
IV Drip Rate
Calculate a basic infusion rate from volume and duration.
Medical math
calculator · 1 min
Shock Index
Calculate heart rate divided by systolic pressure as a trend signal.
Emergency medicine
calculator · 1 min
Reticulocyte Production Index
Estimate marrow response with reticulocytes and hematocrit.
Hematology
What is a clinical calculator?
A published equation or scoring rule applied to structured inputs. It supports a defined decision; it does not replace history, examination, diagnosis, medication guidance, or local policy.
Formula and units stay visible
Assumptions appear before interpretation
Sources and review dates stay attached
No patient identifiers are stored
Built as a connected clinical library
Each calculator links to when to use it, when not to use it, how to interpret the result, and which playbook should come next.
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