ECG/EKG Measurement Solutions for Medical Pros
Calibrated on-screen calipers for accurate rhythm interpretation and clinical reviews.

Specialized tools for specialized care
Cardio Calipers were built in collaboration with medical professionals to bridge the gap between paper strips and digital EMRs. They provide a precise, calibrated overlay for measuring intervals on any digital ECG scan or hospital image viewer.
Use Cases
- Measure Intervals: Quickly audit PR, QRS, and QT intervals in milliseconds or millivolts.
- Calculate BPM: Instantly convert R-R intervals to heart rate, even for irregular rhythms.
- Telehealth Reviews: Perform clinical reviews on remote screens without scratching your hardware with physical tools.
- Hospital Licensing: We provide bulk licensing and support purchase orders for major healthcare systems.
The Professional Standard
Cardio Calipers
Our flagship medical tool, calibrated to standard EKG paper speeds (25mm/s and 50mm/s). Trusted by hospitals and telemetry departments worldwide.
Try Cardio Calipers
Download the free trial for Windows 10 and 11, or buy a license.