Enter the left ventricular internal dimensions at end-diastole (LVIDd) and end-systole (LVIDs) into the calculator to estimate end-diastolic volume (EDV), end-systolic volume (ESV), and left ventricular ejection fraction (LVEF) using the Teichholz method.

Teichholz Formula Calculator

Enter LVIDd and LVIDs to calculate EDV, ESV, and LVEF (Teichholz method). Typical adult LVIDd values are commonly reported in cm (often around ~4–6 cm, depending on body size and measurement technique).

Medical disclaimer: This calculator provides an educational estimate only and is not medical advice. Do not use it to diagnose, treat, or make clinical decisions—LVEF interpretation should be performed by a qualified clinician using validated echocardiographic methods and the official report. If you have symptoms such as chest pain, shortness of breath, fainting, or severe dizziness, seek urgent medical care.

Limitations (important)

  • The Teichholz method estimates LV volume from a single linear dimension and is generally most appropriate when the left ventricle has a relatively normal shape.
  • It can be less accurate when LV geometry is abnormal (for example: regional wall motion abnormalities, LV aneurysm, significant remodeling, or asymmetric hypertrophy).
  • When image quality allows, clinicians often prefer methods such as biplane Simpson’s (method of disks) and/or 3D echocardiography for LV volumes and LVEF.

Teichholz Formula

The Teichholz formula is used to estimate left ventricular (LV) volume from the LV internal dimension measured by echocardiography. When applied to both end-diastolic (LVIDd) and end-systolic (LVIDs) dimensions, it can be used to estimate end-diastolic volume (EDV), end-systolic volume (ESV), and then calculate left ventricular ejection fraction (LVEF).

Important: These are estimates based on a linear measurement. If the LV shape is distorted or there are regional wall motion abnormalities, Teichholz-based volumes and LVEF may be inaccurate; in many clinical settings, Simpson’s biplane and/or 3D echocardiography are preferred when feasible.

\begin{aligned}
\text{EDV} &= \left( \frac{7.0}{(2.4 + \text{LVIDd})} \right)\text{LVIDd}^3 \\
\text{ESV} &= \left( \frac{7.0}{(2.4 + \text{LVIDs})} \right)\text{LVIDs}^3 \\
\text{LVEF}(\%) &= \left(\frac{\text{EDV} - \text{ESV}}{\text{EDV}}\right)\times 100
\end{aligned}

Variables:

  • EDV is the estimated end-diastolic volume (mL)
  • ESV is the estimated end-systolic volume (mL)
  • LVEF is the left ventricular ejection fraction (%)
  • LVIDd is the left ventricular internal dimension at end-diastole (cm)
  • LVIDs is the left ventricular internal dimension at end-systole (cm)

To calculate LVEF using the Teichholz method, you measure both LVIDd and LVIDs during an echocardiogram, compute EDV and ESV using the Teichholz volume equation, and then calculate ejection fraction from those volumes.

What is the Teichholz Formula?

The Teichholz formula is a mathematical equation used in cardiology to estimate left ventricular volume from a single linear LV dimension. By applying it to measurements taken at end-diastole and end-systole (LVIDd and LVIDs), you can estimate EDV and ESV and then compute LVEF, which is the percentage of end-diastolic blood volume ejected by the left ventricle with each contraction.

How to Calculate LVEF Using the Teichholz Formula?

The following steps outline how to calculate the left ventricular ejection fraction using the Teichholz method.

  1. Measure the left ventricular internal dimension at end-diastole (LVIDd) in centimeters during an echocardiogram.
  2. Measure the left ventricular internal dimension at end-systole (LVIDs) in centimeters during the same study.
  3. Calculate EDV and ESV using the Teichholz volume equation: V = (7.0 / (2.4 + D)) × D^3 (with D in cm and V in mL).
  4. Calculate LVEF: LVEF (%) = ((EDV − ESV) / EDV) × 100.
  5. Use this calculator to estimate EDV/ESV/LVEF from provided LVID measurements. For clinical decisions, rely on the official echocardiogram report and clinician interpretation.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Left ventricular internal dimension at end-diastole (LVIDd) = 5.0 cm

Left ventricular internal dimension at end-systole (LVIDs) = 3.0 cm

EDV = (7.0 / (2.4 + 5.0)) × 5.03 ≈ 118.2 mL, ESV = (7.0 / (2.4 + 3.0)) × 3.03 ≈ 35.0 mL, so LVEF ≈ ((118.2 − 35.0) / 118.2) × 100 ≈ 70.4%.

Methodology & references

Method note: This tool uses the Teichholz equation V = (7.0 / (2.4 + D)) × D³ with D in centimeters; because 1 cm³ = 1 mL, the result is in mL.

  • To learn more about when Teichholz is appropriate vs. when Simpson’s biplane/3D methods are preferred, check current echocardiography chamber-quantification guidance from major professional societies (e.g., ASE/EACVI) and the original Teichholz publication.
  • Last updated: 2026-01-01