EKG Paper - EKG Basics.


ECG tracings are recorded on grid paper. The horizontal axis of the
EKG paper records time, with black marks at the top indicating 3-second intervals.

Each second is marked by 5 large grid blocks. Thus, each large block equals 0.2 second. The vertical axis records EKG amplitude (voltage). Two large blocks equal 1 millivolt (mV). Each small block equals 0.1 mV.

Within the large blocks are 5 small blocks, each representing 0.04 seconds.

ekg tracing paper




Authors and Reviewers

Authored by Thomas O'Brien
Medically reviewed by Dr. Jonathan Keroes, MD, Cardiology
Last Update: 11/8/2020



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