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On-Screen EKG Measurement with Cardio Calipers

The Cardio Calipers is the fastest and most accurate way to measure electrocardiograms on a computer screen with pixel perfect accuracy.

Our unique transparent Windows app floats above other software, allowing you to measure EKGs anywhere

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Works with any software

The Cardio Calipers allow measurement of any EKG, no matter what format the EKG image is in.

Measure any EKG

Simply open up your EKG in any image viewer application and move the Cardio Calipers into place with the mouse.

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Purchase with confidence

Download for free, and purchase the full featured version for just $49.50, we offer a risk free 30 day money back guarantee

Accurate and Simple to use

Manipulating the application is simply accomplished through use of the mouse, and a variety of keyboard controls allow for extra fine alignment. The Calipers can be aligned to measure an entire EKG complex, QT interval, PR interval, and QRS duration.

The Compass can be used with any program as they float over other applications allowing quick and easy measurements. Read the full specs on how everything works.

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Unlock the full version
Find out all the professional features, including custom measurement units and transparency settings that are available after purchasing.
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Full Rotation
360 degrees rotation has been included with the Calipers enabling them to be aligned to any EKG image.
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Calibrated Units
The Cardio Calipers measures in millimeters, seconds, milliVolts and can also display the heart rate in beats per minute. The Calipers can be calibrated to individual EKG's at the touch of a button, and using the 'Paper Options' screen non-standard EKGs can be configured for measurement.

Cardio Calipers 4.0 now available, with semi transparent skins, and 360° rotation so you can measure any shape on your screen.

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Discover the many uses of your Screen Compass

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Keyboard Controls
The Cardio Calipers has numerous keyboard controls. By pressing Ctrl, Shift and Alt while dragging with the mouse the Calipers will extend, rotate or snap to 90 degrees.
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Mouse feedback
To aid measurement the Caliper's mouse pointers will change making alignment intuitive and simple.
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3rd Party Interfacing
The latest version of the Calipers provides the ability to be controlled from any external application through its COM interface.