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
06
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
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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