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Ejection Fraction from Ventricular Volumes Calculator

EF = (EDV − ESV) / EDV × 100; SV = EDV − ESV.

Compute the left-ventricular ejection fraction (EF) and stroke volume (SV) from echo / MRI volumes: SV = EDV − ESV; EF % = SV / EDV × 100. Normal EF ≥ 55 %; reduced EF < 40 % defines HFrEF.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

mL
mL

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

EF = (EDV − ESV) / EDV × 100

In depth

Compute the left-ventricular ejection fraction (EF) and stroke volume (SV) from echo / MRI volumes: SV = EDV − ESV; EF % = SV / EDV × 100. Normal EF ≥ 55 %; reduced EF < 40 % defines HFrEF.