Interactive LV Mass Calculator
Enter echo measurements from end-diastole to estimate left ventricular (LV) mass using the ASE-cube corrected Devereux equation, then index it to body surface area (BSA).
Left ventricular mass is a core echocardiography metric for evaluating cardiac remodeling, hypertension burden, and long-term cardiovascular risk. If you have wall thickness and chamber size data, this calculator can quickly estimate total LV mass and LV mass index (LVMI), which is often more clinically useful because it adjusts for body size.
What is LV mass?
LV mass is an estimate of the amount of myocardial tissue in the left ventricle. When blood pressure is chronically elevated, or when the ventricle is exposed to increased load, myocardial tissue can thicken or remodel over time. This process can produce left ventricular hypertrophy (LVH), which has important prognostic value in cardiology.
In day-to-day practice, LV mass is typically derived from linear echocardiographic measurements rather than measured directly. The result is reported in grams (g), and then commonly indexed to body surface area (g/m²).
Formula used in this calculator
1) LV mass (Devereux-corrected cube formula)
LV Mass (g) = 0.8 × [1.04 × ((IVSd + LVIDd + PWTd)³ − (LVIDd)³)] + 0.6
- IVSd, LVIDd, and PWTd are converted from mm to cm before calculation.
- 1.04 represents myocardial specific gravity.
- 0.8 and +0.6 are correction factors used in validated echo formulas.
2) Body surface area (Du Bois formula)
BSA (m²) = 0.007184 × Height(cm)0.725 × Weight(kg)0.425
3) LV mass index
LVMI (g/m²) = LV Mass / BSA
Reference interpretation (adult, commonly used cutoffs)
| Classification | Male LVMI (g/m²) | Female LVMI (g/m²) |
|---|---|---|
| Normal | 49–115 | 43–95 |
| Mild LVH | 116–131 | 96–108 |
| Moderate LVH | 132–148 | 109–121 |
| Severe LVH | ≥149 | ≥122 |
Cutoffs may vary by lab, imaging modality, and professional society guideline updates. Use local standards when reporting.
Why LV mass index matters more than raw LV mass
A larger person naturally has a larger heart. If you only look at absolute LV mass, you can over-call hypertrophy in larger frames and under-call it in smaller frames. Indexing to BSA helps normalize the value and improves clinical interpretation, especially in hypertension and heart failure workups.
How to use this tool correctly
- Use end-diastolic measurements from a high-quality echocardiography study.
- Make sure all wall and chamber dimensions are in millimeters when entered.
- Confirm height and weight are current for meaningful indexing.
- Interpret LVMI alongside blood pressure history, ECG, symptoms, and overall echo findings.
Common mistakes to avoid
Mixing units
Most errors happen when users mix mm and cm. This calculator expects mm for wall and chamber inputs, then converts internally.
Using outdated anthropometrics
LVMI depends on BSA. A large change in weight can alter indexed interpretation.
Over-interpreting one number
LV mass is one piece of the puzzle. Diastolic function, ejection fraction, strain, blood pressure control, and valvular disease all matter.
Clinical context reminders
Increased LV mass can result from longstanding hypertension, aortic stenosis, athletic adaptation, infiltrative disease, or other causes. The geometric pattern also matters. This tool reports relative wall thickness (RWT) and a simple geometry label (normal geometry, concentric remodeling, concentric hypertrophy, or eccentric hypertrophy) to support quick screening.
Final note
This LV mass calculator is intended for educational and informational use. It does not replace formal interpretation by a qualified clinician or the reporting standards of your echo laboratory.