Ejection Fraction Calculator

Ejection Fraction Calculator — Accurate Cardiac Function Assessment

Calculate ejection fraction (EF), stroke volume, and cardiac output for heart function assessment. Get detailed cardiac measurement analysis and interpretation.

Step 1: Ventricular Volumes

Left Ventricular End-Diastolic Volume (LVEDV)

Left Ventricular End-Systolic Volume (LVESV)

Heart Rate

bpm

Measurement Method

About Ventricular Volumes

LVEDV is the volume of blood in the left ventricle at the end of diastole (filling phase). LVESV is the volume at the end of systole (contraction phase).

Step 2: Patient Details

Patient Age

years

Patient Gender

Body Surface Area (BSA)

m²

Clinical Context

Show EF classification

Show cardiac output chart

About Ejection Fraction

Ejection Fraction (EF) is the percentage of blood pumped out of the left ventricle with each heartbeat. Normal EF is 55-70%. EF is a key indicator of heart function.

Ejection Fraction Calculation Results

Summary

EF Classification

Cardiac Output

Calculated Ejection Fraction

58% Normal

Stroke Volume: 70 ml

Stroke Volume

70 ml

Cardiac Output

5.25 L/min

Cardiac Index

2.84 L/min/m²

Measurement Method

Echocardiography

Ejection Fraction Classification

Normal EF

55-70%

Healthy heart function

Mildly Reduced

41-54%

Mild systolic dysfunction

Moderately Reduced

30-40%

Moderate heart failure

Severely Reduced

<30%

Severe heart failure

EF Range	Classification	Clinical Significance
>70%	Hyperdynamic	May indicate conditions like anemia, hyperthyroidism
55-70%	Normal	Healthy heart function
41-54%	Mildly Reduced	Borderline, may need monitoring
30-40%	Moderately Reduced	Heart failure with reduced EF (HFrEF)
<30%	Severely Reduced	Severe systolic dysfunction

Cardiac Output Analysis

Cardiac Calculations Formula

EF = (LVEDV – LVESV) / LVEDV × 100%

Ejection Fraction = (End-diastolic volume – End-systolic volume) ÷ End-diastolic volume × 100%. Stroke Volume = LVEDV – LVESV. Cardiac Output = Stroke Volume × Heart Rate.

Consult a Healthcare Professional

This calculator provides educational information only. For proper medical assessment and diagnosis of heart conditions, consult a qualified healthcare provider or cardiologist.

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