The Best ECG Simulators Online for Medical Students (2026)
By the DecodeMed Team6 min read
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An ECG simulator trains you to recognise rhythms as they appear, beat by beat, on a monitor. SkillStat and Practical Clinical Skills are the best free rhythm drills, the DecodeMed ECG Atlas plays real 12-lead tracings at 25 mm/s with the teaching marks on, and Epicardio simulates the heart and its ECG together.
Two kinds of ECG simulator
- Rhythm generators draw computer-made rhythm strips: fast drills for the 20–30 rhythms you see on a monitor.
- Real-tracing players replay recorded ECGs in real time. Slower to drill, but they look like what you will actually see, with noise and borderline values.
Use both: generators for speed, real tracings for the 12-lead patterns no generator draws well, such as bundle branch blocks and infarction.
The best ECG simulators
01DecodeMed ECG Atlas
Best for: real 12-lead ECGs played in real time
Play sweeps a real recording across the paper at 25 mm/s like a monitor, and Play beat draws one beat slowly with each wave labelled as it appears. Tracings are organised from normal rhythm to arrhythmias, blocks and infarction patterns, with a Teaching view that marks what changes and a Plain view to test yourself.
02SkillStat
Best for: free six-second rhythm drill
A free web game that shows a six-second strip and asks you to name one of 27 common rhythms. Excellent for speed on monitor rhythms.
03Practical Clinical Skills
Best for: free EKG practice drills and quizzes
Free rhythm lessons, practice drills and quizzes on the web, with a reference for each rhythm.
04EKG.Academy
Best for: short lessons with rhythm drills
Free lessons followed by rhythm-strip practice, aimed at beginners.
05Epicardio Heart Simulator
Best for: the 3D heart and its ECG together
An iPad app that simulates the heart in 3D with an integrated ECG, so you can see the electrical events behind each wave. Paid.
06RadioAnato AI
Best for: the anatomy behind each lead
The DecodeMed app shows the heart in 3D and on real CT, so you can see which wall each lead faces, with an AI tutor to ask.
Comparison at a glance
| Simulator | Tracings | Best for | Cost |
|---|---|---|---|
| DecodeMed ECG Atlas | Real, 12 leads | 12-lead patterns, real-time play | Web |
| SkillStat | Generated strips | Rhythm recognition speed | Free |
| Practical Clinical Skills | Generated strips | Rhythm drills and quizzes | Free |
| EKG.Academy | Strips | Beginner rhythm practice | Free |
| Epicardio | Simulated | Heart and ECG together | Paid, iPad |
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How to train with a simulator
- Name the rhythm in under 10 seconds, then check rate, P waves and QRS width to confirm.
- Mix real and generated tracings so you do not learn only the clean versions.
- Move on to 12 leads once monitor rhythms are automatic: see how to learn ECG from scratch.
More tools in the best apps to learn ECG.
Frequently asked questions
What is the best free ECG simulator?
SkillStat for rhythm recognition and Practical Clinical Skills for drills and quizzes. For real 12-lead tracings played in real time, the DecodeMed ECG Atlas.
Are ECG simulators useful for medical students?
Yes, for rhythm recognition speed. They do not replace reading complete 12-lead ECGs, which is where most exam and ward questions come from.
Is there an ECG simulator with real patients’ tracings?
Yes. The DecodeMed ECG Atlas replays real recordings from open research databases at 25 mm/s.
DecodeMed and its app, RadioAnato AI, are our own product, so weigh what we say about them accordingly. We have no affiliate or commercial relationship with the other tools listed.
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