Calculate end-diastolic volume, stroke volume, or end-systolic volume from any two values, with mL, L, cm³, and US fl oz conversions.
Medical note: This calculator is for educational purposes only and does not provide medical advice or a diagnosis. EDV/ESV/SV measurements typically come from clinical testing (such as an echocardiogram or cardiac MRI) and should be interpreted by a qualified clinician in context. If you have symptoms such as chest pain, shortness of breath, fainting, or swelling, seek medical care.
ESV Formula
End-systolic volume, or ESV, is the amount of blood left in a ventricle after contraction. The calculator uses the relationship between end-diastolic volume, stroke volume, and end-systolic volume.
To solve for the other variables, the same relationship can be rearranged:
- ESV = end-systolic volume, the blood volume remaining after the ventricle contracts
- EDV = end-diastolic volume, the blood volume in the ventricle before contraction
- SV = stroke volume, the blood volume pumped out with one beat
The calculator lets you enter any two of the three values and solves for the missing one. If you enter EDV and SV, it calculates ESV. If you enter EDV and ESV, it calculates stroke volume. If you enter SV and ESV, it calculates end-diastolic volume.
All volume entries are converted to milliliters before the calculation, then converted back to the selected output unit. Supported units include mL, L, cm³, and US fl oz.
Adult Left-Ventricular Volume Context
Reference intervals depend on body size, sex, age and imaging method. The EDV and ESV values below are ASE/EACVI 2015 adult left-ventricular 2D biplane reference intervals, not universal diagnostic thresholds or right-ventricular ranges. A clinician should interpret the applicable report.
| Measurement | Reference Context | Meaning |
|---|---|---|
| End-diastolic volume, EDV | Men: 62–150 mL; women: 46–106 mL (2D biplane LV) | Volume in the ventricle before contraction |
| Stroke volume, SV | No single universal range; interpret in clinical context | Volume pumped out per beat |
| End-systolic volume, ESV | Men: 21–61 mL; women: 14–42 mL (2D biplane LV) | Volume left after contraction |
Volume Unit Conversions Used
| Unit | Equivalent in mL |
|---|---|
| 1 mL | 1 mL |
| 1 cm³ | 1 mL |
| 1 L | 1000 mL |
| 1 US fl oz | 29.5735 mL |
Example Calculations
Example 1: Calculate ESV
You have an end-diastolic volume of 130 mL and a stroke volume of 75 mL.
The end-systolic volume is 55 mL.
Example 2: Calculate Stroke Volume
You have an end-diastolic volume of 0.14 L and an end-systolic volume of 50 mL.
First convert 0.14 L to mL:
Then calculate stroke volume:
The stroke volume is 90 mL.
FAQ
What does ESV mean?
ESV means end-systolic volume. It is the amount of blood left in a ventricle at the end of systole, after the heart has contracted and pumped blood out.
Why must EDV be greater than or equal to SV?
Stroke volume is the amount of blood pumped out from the volume present before contraction. Since the heart cannot pump out more blood than was present in the ventricle, EDV must be greater than or equal to SV. If SV is larger than EDV, the calculated ESV would be negative, which is not physically valid.
Is ESV the same as stroke volume?
No. Stroke volume is the amount of blood pumped out during one beat. ESV is the amount left behind after that contraction. They are related by the formula ESV = EDV – SV.
