Cardiology.org · ECG reference models

Extreme Percentile ECG Calculators

Choose a calculator below. Each app uses whole-number ages 12–34 and sex-specific age equations derived from the supplied reference dataset.

01

V1, V2 and V3

Lower-tail 1st and 2nd percentiles for precordial S-wave amplitudes in µV.

Open calculator → 02

V4, V5 and V6

1st, 2nd, 98th and 99th percentiles for precordial R-wave amplitudes in µV.

Open calculator → 03

Spatial vector magnitude (SVM), Sokolow–Lyon score (SL), and QRS duration

Four extreme percentiles for spatial vector magnitude (SVM), Sokolow–Lyon score (SL), and QRS duration.

Open calculator → 04

QTc and QTcFrid

1st, 2nd, 98th and 99th percentiles for corrected QT measurements in ms.

Open calculator →