LVMI Index Calculator
Height + weight for BSA, plus echo measurements for LVMI
BSA computation, LVMI, RWT, and geometry classification
Real-time Echocardiographic Geometry Visualizer
How LVMI Index Calculator Works
LVMI Index Calculator works by first computing BSA from height and weight using the Mosteller formula, then calculating LVM via the Devereux equation, and dividing LVM by BSA to produce LVMI.
The "index" normalizes LVM to body size. Raw LVM ranges from 67–247 g in healthy adults. Indexing to BSA makes comparison across patients meaningful.
LVMI Index Calculator Formula
The LVMI Index Calculator formula has 2 parts: BSA computation and LVM indexing.
BSA (m²) = √(Height cm × Weight kg ÷ 3600) LVM (g) = 0.8 × { 1.04 × [(IVSd + LVIDd + PWd)³ − LVIDd³] } + 0.6 LVMI (g/m²) = LVM (g) ÷ BSA (m²) LVMI Index Calculator Conversions Chart
BSA reference values and LVMI severity classifications.
| Height cm | Weight kg | BSA (m²) |
|---|---|---|
| 155 | 55 | 1.54 |
| 165 | 65 | 1.73 |
| 170 | 72 | 1.84 |
| 175 | 80 | 1.97 |
| 185 | 95 | 2.21 |
9 Sub-Calculator Variants
Specialized calculation variants designed for specific clinical contexts.
MDCalc
Standard MDCalc-style tool with direct BSA entry and full severity classification.
Open Tool →2.7 Exponent
Height²·⁷ indexing method (de Simone) for accurate LVH detection in obese patients.
Open Tool →Canadian Standards
CCS-aligned LVMI calculator with Canadian echo lab normative standards.
Open Tool →Echo Mode
Selectable measurement techniques with guideline-compliant cutoffs.
Open Tool →Parameters Tool
Interactive parameter validation tool with instant clinical status badges.
Open Tool →Pediatric
Child-specific reference ranges and percentiles for ages 1–17 years.
Open Tool →BSA Indexing
Dedicated BSA computation and LV mass indexing calculator.
Open Tool →Omni Calculator
All-in-one comprehensive cardiac mass analysis calculator.
Open Tool →RWT Calculator
Focused tool for wall-to-lumen ratio and concentric remodeling assessment.
Open Tool →Frequently Asked Questions
LVMI is calculated in echocardiography by first measuring three linear dimensions at end-diastole — interventricular septum thickness (IVSd), LV internal diameter (LVIDd), and posterior wall thickness (PWd) — then applying the ASE-recommended Devereux formula to compute LV mass, and finally dividing by Body Surface Area (BSA).
The Devereux formula is: LVM (g) = 0.8 × { 1.04 × [(IVSd + LVIDd + PWd)³ − LVIDd³] } + 0.6. All three measurements are taken in centimeters using M-mode or 2D-guided echocardiography at the level of the mitral valve tips during end-diastole.
Once LV mass is calculated, LVMI is obtained by dividing LVM by BSA: LVMI (g/m²) = LVM ÷ BSA. BSA is either entered directly or calculated from height and weight using the Mosteller formula: BSA = √(Height × Weight / 3600).
This method was validated by Richard B. Devereux against autopsy data and is recommended by the American Society of Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI) in the 2015 chamber quantification guidelines (Lang et al.).
The normal range for Left Ventricular Mass Index (LVMi) is 49–115 g/m² for men and 43–95 g/m² for women, based on ASE/EACVI guidelines (Lang et al., 2015).
Values above these thresholds indicate Left Ventricular Hypertrophy (LVH), classified by severity:
- Mildly Abnormal: 116–131 g/m² (men) / 96–108 g/m² (women)
- Moderately Abnormal: 132–148 g/m² (men) / 109–121 g/m² (women)
- Severely Abnormal: ≥ 149 g/m² (men) / ≥ 122 g/m² (women)
These sex-specific reference ranges account for the fact that the male heart is structurally larger on average. Using separate cutoffs prevents misclassification of normal female hearts as hypertrophied and avoids underdiagnosis in male patients.
Elevated LVMi values are associated with increased cardiovascular risk, including heart failure, stroke, and cardiovascular mortality. LVMi is used alongside Relative Wall Thickness (RWT) to classify cardiac geometry into four patterns: Normal Geometry, Concentric Remodeling, Concentric Hypertrophy, and Eccentric Hypertrophy.