How to use the ejection fraction calculator
Find the percentage of blood the heart pumps out with each beat from its end-diastolic and end-systolic volumes. Enter end-diastolic volume, end-systolic volume in the fields above; the stroke volume, ejection fraction are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “ejection fraction”, “heart pumping percent”, “stroke volume calculation”, “calculate ejection fraction”, “find stroke volume”.
Formula
Variables
- edv — End-diastolic volume (mL)
- esv — End-systolic volume (mL)
Worked example
With end-diastolic volume = 120 mL, end-systolic volume = 50 mL, the calculator gives stroke volume ≈ 70 mL; ejection fraction ≈ 58.33333 %.
Frequently asked questions
What is the ejection fraction calculator used for?
Find the percentage of blood the heart pumps out with each beat from its end-diastolic and end-systolic volumes. It helps with questions such as “ejection fraction”, “heart pumping percent”, “stroke volume calculation”.
What is the formula for the ejection fraction calculation?
Stroke volume (mL) = edv-esv. Ejection fraction (%) = (edv-esv) / edv × 100. Here edv is end-diastolic volume (mL), esv is end-systolic volume (mL).
What inputs do I need for the ejection fraction calculator?
You need end-diastolic volume in mL, end-systolic volume in mL. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the ejection fraction calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the ejection fraction result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.