calculator · 1 min
Mean Arterial Pressure
Estimate MAP from systolic and diastolic blood pressure.
Emergency medicine
Specialty collection
Clinical tools · Open library
From question to usable answer.
Search calculators and quick references built to show their work, state their limits, and stay useful under pressure.
16
public instruments
Specialty collection
Emergency medicine
calculator · 2 min
Corrected Sodium
Adjust serum sodium for hyperglycemia with visible assumptions.
Emergency medicine
calculator · 1 min
Serum Osmolality
Estimate calculated serum osmolality from sodium, glucose, and BUN.
Emergency medicine
calculator · 1 min
Shock Index
Calculate heart rate divided by systolic pressure as a trend signal.
Emergency medicine
Specialty collection
Cardiology
Specialty collection
Internal medicine
calculator · 2 min
Creatinine Clearance
Estimate creatinine clearance with the Cockcroft-Gault equation.
Internal medicine
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
Corrected Calcium
Adjust total calcium for albumin with the correction and its limits visible.
Internal medicine
1 tools
Specialty collection
Hematology
Specialty collection
Medication safety
Specialty collection
Medical math
Specialty collection
Pediatrics
calculator · 3 min
Pediatric Dose by Weight
A safety-first workflow for weight-based pediatric dosing.
Pediatrics
In reviewBefore you use a result
Transparent support, not automatic decisions.
Are these clinical calculators free?
Yes. The public calculators are free to use and show their inputs, units, assumptions, and limitations.
Do the calculators store patient information?
No. Calculations run locally in the interface and are not a patient record.
Can a calculator replace clinical judgment?
No. Use every result as transparent decision support alongside examination, current guidance, and local policy.